code: def _unschedule_sending_init_updates(self):
          
          LOG.debug('Un-scheduling sending of initial Non-RTC UPDATEs'
                    ' (init. UPDATEs already sent: %s)',
                    self._sent_init_non_rtc_update)
          if self._rtc_eor_timer:
              self._rtc_eor_timer.stop()
              self._rtc_eor_timer = None
              return True
          return False
docs: Un-schedules sending of initial updates
  
          Stops the timer if set for sending initial updates.
          Returns:
              - True if timer was stopped
              - False if timer was already stopped and nothing was done