code: def remove_slice_db(self, fid):
          '''将上传任务的分片从数据库中删除'''
          sql = 'DELETE FROM slice WHERE fid=?'
          self.cursor.execute(sql, [fid, ])
          self.check_commit(f remove_slice_db(self, fid):
          '''将上传任务的分片从数据库中删除'''
          sql = 'DELETE FROM slice WHERE fid=?'
          self.cursor.execute(sql, [fid, ])
          self.check_commit()
docs: 将上传任务的分片从数据库中删除