Removed a unused exception class in the factorial example

src/main/java/org/jboss/netty/example/factorial/FactorialProtocolException.java

@@ -1,52 +0,0 @@
-/*
- * JBoss, Home of Professional Open Source
- *
- * Copyright 2008, Red Hat Middleware LLC, and individual contributors
- * by the @author tags. See the COPYRIGHT.txt in the distribution for a
- * full listing of individual contributors.
- *
- * This is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as
- * published by the Free Software Foundation; either version 2.1 of
- * the License, or (at your option) any later version.
- *
- * This software is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this software; if not, write to the Free
- * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
- */
-package org.jboss.netty.example.factorial;
-
-/**
- * Thrown when there was a protocol violation during communication.
- *
- * @author The Netty Project (netty-dev@lists.jboss.org)
- * @author Trustin Lee (tlee@redhat.com)
- *
- * @version $Rev$, $Date$
- */
-public class FactorialProtocolException extends Exception {
-
-    private static final long serialVersionUID = -7045872169845421748L;
-
-    public FactorialProtocolException() {
-        super();
-    }
-
-    public FactorialProtocolException(String message, Throwable cause) {
-        super(message, cause);
-    }
-
-    public FactorialProtocolException(String message) {
-        super(message);
-    }
-
-    public FactorialProtocolException(Throwable cause) {
-        super(cause);
-    }
-}