OF-922: Revert extraneous override

The inputClosed method was added during troubleshooting for MINA 2.0.9
and can be removed now that we have downgraded to 2.0.7.

src/java/org/jivesoftware/openfire/nio/ConnectionHandler.java

@@ -19,14 +19,9 @@
 
 package org.jivesoftware.openfire.nio;
 
-import java.io.IOException;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-
 import org.apache.mina.core.service.IoHandlerAdapter;
 import org.apache.mina.core.session.IdleStatus;
 import org.apache.mina.core.session.IoSession;
-import org.apache.mina.filter.codec.ProtocolDecoderException;
 import org.dom4j.io.XMPPPacketReader;
 import org.jivesoftware.openfire.Connection;
 import org.jivesoftware.openfire.net.MXParser;
@@ -38,8 +33,6 @@ import org.xmlpull.v1.XmlPullParserException;
 import org.xmlpull.v1.XmlPullParserFactory;
 import org.xmpp.packet.StreamError;
 
-import javax.net.ssl.SSLHandshakeException;
-
 /**
  * A ConnectionHandler is responsible for creating new sessions, destroying sessions and delivering
  * received XML stanzas to the proper StanzaHandler.
@@ -107,14 +100,6 @@ public abstract class ConnectionHandler extends IoHandlerAdapter {
         }
     }
 
-    @Override
-    public void inputClosed( IoSession session ) throws Exception {
-        final Connection connection = (Connection) session.getAttribute(CONNECTION);
-        if ( connection != null ) {
-            connection.close( true );
-        }
-    }
-
     @Override
     public void sessionClosed(IoSession session) throws Exception {
         final Connection connection = (Connection) session.getAttribute(CONNECTION);