Delete a cron job

        Args:
            iden (bytes):  The iden of the cron job to be deleted

async def delCronJob(self, iden):
        '''
        Delete a cron job

        Args:
            iden (bytes):  The iden of the cron job to be deleted
        '''
        cron = self.cell.agenda.appts.get(iden)
        if cron is None:
            raise s_exc.NoSuchIden()
        self._trig_auth_check(cron.useriden)
        await self.cell.agenda.delete(iden)