protected void initializeEventListeners() {
    for (AsyncEventListener listener : eventProcessor.getSender().getAsyncEventListeners()) {
      registerAsyncEventListener(listener);
    }
  }
Removes registration of a previously registered <code>AsyncEventListener</code>.

@param listener A AsyncEventListener to be unregistered
geode-core/src/main/java/org/apache/geode/internal/cache/wan/GatewaySenderEventCallbackDispatcher.java