code: func (c *Client) DeleteRetryJob(retryAt int64, jobID string) error {
  	ok, _, err := c.deleteZsetJob(redisKeyRetry(c.namespace), retryAt, jobID)
  	if err != nil {
  		return err
  	}
  	if !ok {
  		return ErrNotDeleted
  	}
  	return nil
  }
docs: // DeleteRetryJob deletes a job in the retry queue.