code: def delete_job(self, job_id):
          
          if hasattr(job_id, 'job_id'):
              job_id = job_id.job_id
          with self._sock_ctx() as socket:
              self._send_message('delete {0}'.format(job_id), socket)
              self._receive_word(socket, b'DELETED')
docs: Delete the given job id. The job must have been previously reserved by this connection