code: public static synchronized void removeListener(int fileDescriptor) {
          if (listeners.containsKey(fileDescriptor)) {
              listeners.remove(fileDescriptor);
              disableSerialDataReceiveCallback(fileDescriptor);
          }
      }
docs: <p>
  Java consumer code can all this method to unregister itself as a listener for pin state
  changes.
  </p>
  
  @see com.pi4j.jni.SerialInterruptListener
  @see com.pi4j.jni.SerialInterruptEvent
  
  @param fileDescriptor the serial file descriptor/handle