deleted unneccessary sctp handlers

transport-sctp/src/main/java/io/netty/channel/sctp/handler/SimpleSctpDownstreamHandler.java

@@ -1,24 +0,0 @@
-/*
- * Copyright 2011 The Netty Project
- *
- * The Netty Project licenses this file to you under the Apache License,
- * version 2.0 (the "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- */
-package io.netty.channel.sctp.handler;
-
-import io.netty.channel.SimpleChannelDownstreamHandler;
-
-/**
- * Sctp Downstream handler for sake of completeness
- */
-public class SimpleSctpDownstreamHandler extends SimpleChannelDownstreamHandler {
-}