@Override
  public boolean remove(Object o) {
    return inner.remove(o);
  }
Implementation of the PluggableBlockingQueue abstract class. Used to verify that the pluggable
call queue type for the RpcExecutor can load correctly via the FQCN reflection semantics.
hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/TestPluggableQueueImpl.java