code: def delete_event_time_timer(self, timestamp: int):
      self._j_timer_service.deleteEventTimeTimer(timestamp)
  
imports: from pyflink.datastream import TimerService
  from pyflink.fn_execution.datastream.timerservice import InternalTimerService, N
label_desc: Use image node_id 7 for calling the TimerServiceImpl obj's underlying member method code with example usage: obj.delete_event_time_timer(timestamp) without return types