def _unschedule_sending_init_updates(self):
        """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
        """
        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
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