Unused variables removed

src/engine/net/AbstractConnection.java

@@ -19,7 +19,6 @@ import java.nio.ByteBuffer;
 import java.nio.channels.ClosedChannelException;
 import java.nio.channels.NotYetConnectedException;
 import java.nio.channels.SocketChannel;
-import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.locks.ReentrantLock;
@@ -41,8 +40,6 @@ public abstract class AbstractConnection implements
     protected long lastKeepAliveTime = System.currentTimeMillis();
     protected long lastOpcode = -1;
     protected ConcurrentLinkedQueue<ByteBuffer> outbox = new ConcurrentLinkedQueue<>();
-    protected ByteBuffer outBuf = null;
-    protected ConcurrentHashMap<Long, Byte> cacheList;
     protected long nextWriteTime = 0L;
 
     //Opcode tracking