code: func RemoveFromGCDeleteRange(ctx sessionctx.Context, jobID, elementID int64) error {
  	sql := fmt.Sprintf(completeDeleteRangeSQL, jobID, elementID)
  	_, err := ctx.(sqlexec.SQLExecutor).Execute(context.TODO(), sql)
  	return errors.Trace(err)
  }
docs: // RemoveFromGCDeleteRange is exported for ddl pkg to use.