remove unused import statement (#8792)

Motivation:
The code contained some unused import statements.

Modification:
Remove unused import statements.

Result:
Code cleanup

buffer/src/test/java/io/netty/buffer/ByteBufDerivationTest.java

@@ -22,7 +22,6 @@ import java.nio.ByteOrder;
 import java.util.Random;
 
 import static org.hamcrest.Matchers.*;
-import static org.hamcrest.Matchers.sameInstance;
 import static org.junit.Assert.*;
 
 /**

codec-http/src/main/java/io/netty/handler/codec/spdy/SpdyHeaderBlockEncoder.java

@@ -17,7 +17,6 @@ package io.netty.handler.codec.spdy;
 
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufAllocator;
-import io.netty.util.internal.PlatformDependent;
 
 abstract class SpdyHeaderBlockEncoder {
 

codec-http/src/test/java/io/netty/handler/codec/http/multipart/HttpPostRequestEncoderTest.java

@@ -32,7 +32,6 @@ import org.junit.Test;
 
 import java.io.ByteArrayInputStream;
 import java.io.File;
-import java.nio.charset.Charset;
 import java.util.Arrays;
 import java.util.List;
 

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/WebSocketClientHandshakerTest.java

@@ -32,7 +32,7 @@ import io.netty.handler.codec.http.HttpObjectAggregator;
 import io.netty.handler.codec.http.HttpRequestEncoder;
 import io.netty.handler.codec.http.HttpResponseDecoder;
 import io.netty.util.CharsetUtil;
-import io.netty.util.internal.PlatformDependent;
+
 import org.junit.Test;
 
 import java.net.URI;

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/extensions/compression/PerFrameDeflateDecoderTest.java

@@ -24,8 +24,6 @@ import io.netty.channel.embedded.EmbeddedChannel;
 import io.netty.handler.codec.compression.ZlibCodecFactory;
 import io.netty.handler.codec.compression.ZlibWrapper;
 import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
-import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
-import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtension;
 
 import java.util.Arrays;
 import java.util.Random;

codec-http2/src/main/java/io/netty/handler/codec/http2/AbstractHttp2ConnectionHandlerBuilder.java

@@ -25,8 +25,6 @@ import static io.netty.handler.codec.http2.Http2CodecUtil.DEFAULT_MAX_RESERVED_S
 import static io.netty.util.internal.ObjectUtil.checkNotNull;
 import static io.netty.util.internal.ObjectUtil.checkPositive;
 import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;
-import static java.util.concurrent.TimeUnit.MILLISECONDS;
-import static java.util.concurrent.TimeUnit.SECONDS;
 
 /**
  * Abstract base class which defines commonly used features required to build {@link Http2ConnectionHandler} instances.

codec-http2/src/main/java/io/netty/handler/codec/http2/Http2ServerUpgradeCodec.java

@@ -17,7 +17,6 @@ package io.netty.handler.codec.http2;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufUtil;
 import io.netty.channel.ChannelHandler;
-import io.netty.channel.ChannelHandlerAdapter;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.base64.Base64;
 import io.netty.handler.codec.http.FullHttpRequest;
@@ -38,7 +37,6 @@ import static io.netty.handler.codec.http2.Http2CodecUtil.FRAME_HEADER_LENGTH;
 import static io.netty.handler.codec.http2.Http2CodecUtil.HTTP_UPGRADE_SETTINGS_HEADER;
 import static io.netty.handler.codec.http2.Http2CodecUtil.writeFrameHeader;
 import static io.netty.handler.codec.http2.Http2FrameTypes.SETTINGS;
-import static io.netty.util.internal.ObjectUtil.checkNotNull;
 
 /**
  * Server-side codec for performing a cleartext upgrade from HTTP/1.x to HTTP/2.

codec-http2/src/main/java/io/netty/handler/codec/http2/WeightedFairQueueByteDistributor.java

@@ -19,7 +19,6 @@ import io.netty.util.collection.IntObjectHashMap;
 import io.netty.util.collection.IntObjectMap;
 import io.netty.util.internal.DefaultPriorityQueue;
 import io.netty.util.internal.EmptyPriorityQueue;
-import io.netty.util.internal.MathUtil;
 import io.netty.util.internal.PriorityQueue;
 import io.netty.util.internal.PriorityQueueNode;
 import io.netty.util.internal.SystemPropertyUtil;

codec-http2/src/test/java/io/netty/handler/codec/http2/DefaultHttp2FrameWriterTest.java

@@ -37,7 +37,6 @@ import java.io.IOException;
 import java.util.Arrays;
 
 import static org.junit.Assert.*;
-import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.*;
 
 /**

codec-http2/src/test/java/io/netty/handler/codec/http2/Http2ClientUpgradeCodecTest.java

@@ -14,11 +14,9 @@
  */
 package io.netty.handler.codec.http2;
 
-import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
-import io.netty.channel.ChannelInitializer;
 import io.netty.channel.embedded.EmbeddedChannel;
 import io.netty.handler.codec.http.DefaultFullHttpRequest;
 import io.netty.handler.codec.http.FullHttpRequest;

codec-http2/src/test/java/io/netty/handler/codec/http2/Http2ConnectionHandlerTest.java

@@ -44,7 +44,6 @@ import org.mockito.MockitoAnnotations;
 import org.mockito.invocation.InvocationOnMock;
 import org.mockito.stubbing.Answer;
 
-import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;

codec/src/main/java/io/netty/handler/codec/compression/ByteBufChecksum.java

@@ -18,7 +18,6 @@ package io.netty.handler.codec.compression;
 import io.netty.buffer.ByteBuf;
 import io.netty.util.ByteProcessor;
 import io.netty.util.internal.ObjectUtil;
-import io.netty.util.internal.PlatformDependent;
 
 import java.lang.reflect.Method;
 import java.nio.ByteBuffer;

codec/src/main/java/io/netty/handler/codec/compression/ZlibCodecFactory.java

@@ -15,7 +15,6 @@
  */
 package io.netty.handler.codec.compression;
 
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.SystemPropertyUtil;
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;

codec/src/main/java/io/netty/handler/codec/serialization/CompatibleObjectEncoder.java

@@ -19,8 +19,6 @@ import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufOutputStream;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.handler.codec.MessageToByteEncoder;
-import io.netty.util.Attribute;
-import io.netty.util.AttributeKey;
 
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;

codec/src/test/java/io/netty/handler/codec/serialization/CompatibleObjectEncoderTest.java

@@ -26,7 +26,6 @@ import java.io.Serializable;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
 
 public class CompatibleObjectEncoderTest {
     @Test

common/src/test/java/io/netty/util/internal/DefaultPriorityQueueTest.java

@@ -15,9 +15,7 @@
  */
 package io.netty.util.internal;
 
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.rules.ExpectedException;
 
 import java.io.Serializable;
 import java.util.ArrayList;

common/src/test/java/io/netty/util/internal/logging/Slf4JLoggerFactoryTest.java

@@ -19,7 +19,6 @@ import org.junit.Test;
 import org.mockito.ArgumentCaptor;
 import org.mockito.ArgumentMatchers;
 import org.slf4j.Logger;
-import org.slf4j.Marker;
 import org.slf4j.spi.LocationAwareLogger;
 
 import java.util.Iterator;
@@ -27,7 +26,6 @@ import java.util.Iterator;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
-import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
 public class Slf4JLoggerFactoryTest {

example/src/main/java/io/netty/example/http2/helloworld/frame/server/Http2OrHttpHandler.java

@@ -18,7 +18,6 @@ import io.netty.channel.ChannelHandlerContext;
 import io.netty.example.http2.helloworld.server.HelloWorldHttp1Handler;
 import io.netty.handler.codec.http.HttpObjectAggregator;
 import io.netty.handler.codec.http.HttpServerCodec;
-import io.netty.handler.codec.http2.Http2FrameCodec;
 import io.netty.handler.codec.http2.Http2FrameCodecBuilder;
 import io.netty.handler.ssl.ApplicationProtocolNames;
 import io.netty.handler.ssl.ApplicationProtocolNegotiationHandler;

handler/src/main/java/io/netty/handler/ssl/Conscrypt.java

@@ -15,8 +15,6 @@
  */
 package io.netty.handler.ssl;
 
-import io.netty.util.internal.PlatformDependent;
-
 import javax.net.ssl.SSLEngine;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;

handler/src/main/java/io/netty/handler/ssl/ReferenceCountedOpenSslContext.java

@@ -25,7 +25,6 @@ import io.netty.util.ReferenceCounted;
 import io.netty.util.ResourceLeakDetector;
 import io.netty.util.ResourceLeakDetectorFactory;
 import io.netty.util.ResourceLeakTracker;
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.StringUtil;
 import io.netty.util.internal.SystemPropertyUtil;
 import io.netty.util.internal.logging.InternalLogger;

handler/src/main/java/io/netty/handler/ssl/ReferenceCountedOpenSslServerContext.java

@@ -21,7 +21,6 @@ import io.netty.internal.tcnative.SSL;
 import io.netty.internal.tcnative.SSLContext;
 import io.netty.internal.tcnative.SniHostNameMatcher;
 import io.netty.util.CharsetUtil;
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;
 

handler/src/main/java/io/netty/handler/ssl/util/SimpleTrustManagerFactory.java

@@ -17,7 +17,6 @@
 package io.netty.handler.ssl.util;
 
 import io.netty.util.concurrent.FastThreadLocal;
-import io.netty.util.internal.PlatformDependent;
 
 import javax.net.ssl.ManagerFactoryParameters;
 import javax.net.ssl.TrustManager;

handler/src/test/java/io/netty/handler/ssl/OpenSslEngineTest.java

@@ -24,7 +24,7 @@ import io.netty.handler.ssl.util.SelfSignedCertificate;
 import io.netty.internal.tcnative.SSL;
 import io.netty.util.CharsetUtil;
 import io.netty.util.internal.EmptyArrays;
-import io.netty.util.internal.PlatformDependent;
+
 import org.junit.Assume;
 import org.junit.BeforeClass;
 import org.junit.Test;

handler/src/test/java/io/netty/handler/ssl/PemEncodedTest.java

@@ -26,7 +26,6 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.security.PrivateKey;
 
-import io.netty.buffer.Unpooled;
 import io.netty.buffer.UnpooledByteBufAllocator;
 import org.junit.Test;
 

handler/src/test/java/io/netty/handler/ssl/SniClientTest.java

@@ -26,14 +26,12 @@ import io.netty.channel.local.LocalAddress;
 import io.netty.channel.local.LocalChannel;
 import io.netty.channel.local.LocalHandler;
 import io.netty.channel.local.LocalServerChannel;
-import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
 import io.netty.handler.ssl.util.SelfSignedCertificate;
 import io.netty.util.Mapping;
 import io.netty.util.ReferenceCountUtil;
 import io.netty.util.concurrent.Promise;
-import io.netty.util.internal.PlatformDependent;
+
 import org.junit.Assert;
-import org.junit.Assume;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
@@ -42,7 +40,7 @@ import org.junit.runners.Parameterized.Parameters;
 import javax.net.ssl.KeyManagerFactory;
 import javax.net.ssl.SSLException;
 import javax.net.ssl.TrustManagerFactory;
-import java.security.cert.X509Certificate;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;

handler/src/test/java/io/netty/handler/ssl/SslContextBuilderTest.java

@@ -18,8 +18,6 @@ package io.netty.handler.ssl;
 import io.netty.buffer.UnpooledByteBufAllocator;
 import io.netty.handler.ssl.util.SelfSignedCertificate;
 import org.junit.Assume;
-import org.junit.Ignore;
-import org.junit.Rule;
 import org.junit.Test;
 
 import javax.net.ssl.SSLEngine;

handler/src/test/java/io/netty/handler/ssl/SslErrorTest.java

@@ -52,7 +52,6 @@ import java.security.cert.CertificateException;
 import java.security.cert.CertificateExpiredException;
 import java.security.cert.CertificateNotYetValidException;
 import java.security.cert.CertificateRevokedException;
-import java.security.cert.Extension;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;
 import java.util.Collection;

resolver-dns/src/main/java/io/netty/resolver/dns/DefaultAuthoritativeDnsServerCache.java

@@ -16,7 +16,6 @@
 package io.netty.resolver.dns;
 
 import io.netty.channel.EventLoop;
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.UnstableApi;
 
 import java.net.InetSocketAddress;

resolver-dns/src/main/java/io/netty/resolver/dns/NoopAuthoritativeDnsServerCache.java

@@ -19,8 +19,6 @@ import io.netty.channel.EventLoop;
 import io.netty.util.internal.UnstableApi;
 
 import java.net.InetSocketAddress;
-import java.util.Collections;
-import java.util.List;
 
 /**
  * A noop {@link AuthoritativeDnsServerCache} that actually never caches anything.

resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverClientSubnetTest.java

@@ -20,7 +20,6 @@ import io.netty.channel.MultithreadEventLoopGroup;
 import io.netty.channel.nio.NioHandler;
 import io.netty.channel.socket.nio.NioDatagramChannel;
 import io.netty.handler.codec.dns.DefaultDnsOptEcsRecord;
-import io.netty.handler.codec.dns.DnsRecord;
 import io.netty.util.internal.SocketUtils;
 import io.netty.util.concurrent.Future;
 import org.junit.Ignore;

resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverTest.java

@@ -41,7 +41,6 @@ import io.netty.resolver.ResolvedAddressTypes;
 import io.netty.util.NetUtil;
 import io.netty.util.ReferenceCountUtil;
 import io.netty.util.concurrent.Future;
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.SocketUtils;
 import io.netty.util.internal.StringUtil;
 import io.netty.util.internal.logging.InternalLogger;

resolver-dns/src/test/java/io/netty/resolver/dns/TestDnsServer.java

@@ -51,7 +51,6 @@ import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import java.util.Random;
 import java.util.Set;
 import java.util.concurrent.ThreadLocalRandom;
 

testsuite-http2/src/main/java/io/netty/testsuite/http2/Http2ServerInitializer.java

@@ -31,7 +31,6 @@ import io.netty.handler.codec.http.HttpServerUpgradeHandler.UpgradeCodecFactory;
 import io.netty.handler.codec.http2.CleartextHttp2ServerUpgradeHandler;
 import io.netty.handler.codec.http2.Http2CodecUtil;
 import io.netty.handler.codec.http2.Http2ServerUpgradeCodec;
-import io.netty.handler.ssl.SslContext;
 import io.netty.util.AsciiString;
 import io.netty.util.ReferenceCountUtil;
 

testsuite/src/main/java/io/netty/testsuite/transport/socket/CompositeBufferGatheringWriteTest.java

@@ -27,7 +27,6 @@ import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.channel.ChannelInitializer;
 import io.netty.channel.ChannelOption;
-import io.netty.channel.socket.nio.NioSocketChannel;
 import io.netty.util.ReferenceCountUtil;
 import org.junit.Test;
 

testsuite/src/main/java/io/netty/testsuite/transport/socket/SocketConnectTest.java

@@ -21,8 +21,6 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
-import io.netty.testsuite.util.TestUtils;
-import io.netty.util.NetUtil;
 import io.netty.util.concurrent.ImmediateEventExecutor;
 import io.netty.util.concurrent.Promise;
 import org.junit.Test;

transport-native-epoll/src/main/java/io/netty/channel/epoll/EpollEventLoopGroup.java

@@ -19,7 +19,6 @@ import io.netty.channel.EventLoopGroup;
 import io.netty.channel.DefaultSelectStrategyFactory;
 import io.netty.channel.MultithreadEventLoopGroup;
 import io.netty.channel.SelectStrategyFactory;
-import io.netty.util.concurrent.EventExecutor;
 
 import java.util.concurrent.Executor;
 import java.util.concurrent.ThreadFactory;

transport-native-epoll/src/test/java/io/netty/channel/epoll/EpollSocketTcpMd5Test.java

@@ -24,7 +24,6 @@ import io.netty.channel.EventLoopGroup;
 import io.netty.channel.MultithreadEventLoopGroup;
 import io.netty.util.CharsetUtil;
 
-import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.util.Collections;
 

transport-native-kqueue/src/test/java/io/netty/channel/kqueue/KQueueETSocketAutoReadTest.java

@@ -17,7 +17,6 @@ package io.netty.channel.kqueue;
 
 import io.netty.bootstrap.Bootstrap;
 import io.netty.bootstrap.ServerBootstrap;
-import io.netty.buffer.ByteBufAllocator;
 import io.netty.testsuite.transport.TestsuitePermutation;
 import io.netty.testsuite.transport.socket.SocketAutoReadTest;
 

transport-native-kqueue/src/test/java/io/netty/channel/kqueue/KQueueETSocketExceptionHandlingTest.java

@@ -17,7 +17,6 @@ package io.netty.channel.kqueue;
 
 import io.netty.bootstrap.Bootstrap;
 import io.netty.bootstrap.ServerBootstrap;
-import io.netty.buffer.ByteBufAllocator;
 import io.netty.testsuite.transport.TestsuitePermutation;
 import io.netty.testsuite.transport.socket.SocketExceptionHandlingTest;
 

transport-native-kqueue/src/test/java/io/netty/channel/kqueue/KQueueETSocketReadPendingTest.java

@@ -17,7 +17,6 @@ package io.netty.channel.kqueue;
 
 import io.netty.bootstrap.Bootstrap;
 import io.netty.bootstrap.ServerBootstrap;
-import io.netty.buffer.ByteBufAllocator;
 import io.netty.testsuite.transport.TestsuitePermutation;
 import io.netty.testsuite.transport.socket.SocketReadPendingTest;
 

transport-native-kqueue/src/test/java/io/netty/channel/kqueue/KQueueSocketConnectionAttemptTest.java

@@ -16,13 +16,9 @@
 package io.netty.channel.kqueue;
 
 import io.netty.bootstrap.Bootstrap;
-import io.netty.channel.Channel;
-import io.netty.channel.ChannelInitializer;
 import io.netty.testsuite.transport.TestsuitePermutation;
 import io.netty.testsuite.transport.socket.SocketConnectionAttemptTest;
-import org.junit.Test;
 
-import java.net.InetSocketAddress;
 import java.util.List;
 
 public class KQueueSocketConnectionAttemptTest extends SocketConnectionAttemptTest {

transport-native-unix-common/src/main/java/io/netty/channel/unix/UnixChannelUtil.java

@@ -16,7 +16,6 @@
 package io.netty.channel.unix;
 
 import io.netty.buffer.ByteBuf;
-import io.netty.util.internal.PlatformDependent;
 
 import java.net.InetAddress;
 import java.net.InetSocketAddress;

transport/src/main/java/io/netty/channel/CoalescingBufferQueue.java

@@ -19,7 +19,6 @@ import io.netty.buffer.ByteBufAllocator;
 import io.netty.buffer.CompositeByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.util.internal.ObjectUtil;
-import io.netty.util.internal.PlatformDependent;
 
 /**
  * A FIFO queue of bytes where producers add bytes by repeatedly adding {@link ByteBuf} and consumers take bytes in

transport/src/main/java/io/netty/channel/PendingWriteQueue.java

@@ -18,7 +18,6 @@ package io.netty.channel;
 import io.netty.util.Recycler;
 import io.netty.util.ReferenceCountUtil;
 import io.netty.util.concurrent.PromiseCombiner;
-import io.netty.util.internal.ObjectUtil;
 import io.netty.util.internal.SystemPropertyUtil;
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;

transport/src/main/java/io/netty/channel/nio/AbstractNioChannel.java

@@ -22,7 +22,6 @@ import io.netty.buffer.Unpooled;
 import io.netty.channel.AbstractChannel;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelException;
-import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelPromise;
 import io.netty.channel.ConnectTimeoutException;

transport/src/main/java/io/netty/channel/socket/nio/NioServerSocketChannel.java

@@ -26,7 +26,6 @@ import io.netty.util.internal.SocketUtils;
 import io.netty.channel.nio.AbstractNioMessageChannel;
 import io.netty.channel.socket.DefaultServerSocketChannelConfig;
 import io.netty.channel.socket.ServerSocketChannelConfig;
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.logging.InternalLogger;
 import io.netty.util.internal.logging.InternalLoggerFactory;
 

transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java

@@ -31,7 +31,6 @@ import io.netty.channel.socket.DefaultSocketChannelConfig;
 import io.netty.channel.socket.ServerSocketChannel;
 import io.netty.channel.socket.SocketChannelConfig;
 import io.netty.util.concurrent.GlobalEventExecutor;
-import io.netty.util.internal.PlatformDependent;
 import io.netty.util.internal.SocketUtils;
 import io.netty.util.internal.UnstableApi;
 import io.netty.util.internal.logging.InternalLogger;

transport/src/test/java/io/netty/channel/AbstractChannelTest.java

@@ -18,8 +18,6 @@ package io.netty.channel;
 import java.net.SocketAddress;
 
 import org.junit.Test;
-import org.mockito.invocation.InvocationOnMock;
-import org.mockito.stubbing.Answer;
 
 import static org.junit.Assert.*;
 import static org.mockito.Mockito.*;

transport/src/test/java/io/netty/channel/DelegatingChannelPromiseNotifierTest.java

@@ -20,8 +20,6 @@ import io.netty.util.concurrent.GenericFutureListener;
 import org.junit.Test;
 import org.mockito.Mockito;
 
-import static org.junit.Assert.*;
-
 public class DelegatingChannelPromiseNotifierTest {
     @Test
     public void varargsNotifiersAllowed() {

transport/src/test/java/io/netty/channel/ReentrantChannelTest.java

@@ -19,8 +19,7 @@ import io.netty.bootstrap.Bootstrap;
 import io.netty.bootstrap.ServerBootstrap;
 import io.netty.channel.LoggingHandler.Event;
 import io.netty.channel.local.LocalAddress;
-import io.netty.util.concurrent.Future;
-import io.netty.util.concurrent.GenericFutureListener;
+
 import org.junit.Test;
 
 import java.nio.channels.ClosedChannelException;

transport/src/test/java/io/netty/channel/embedded/EmbeddedChannelTest.java

@@ -49,7 +49,6 @@ import io.netty.channel.ChannelOutboundHandlerAdapter;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.ChannelPromise;
 import io.netty.util.ReferenceCountUtil;
-import io.netty.util.concurrent.Future;
 import io.netty.util.concurrent.FutureListener;
 import io.netty.util.concurrent.ScheduledFuture;