code: def delete_upload_id(cls, tables: I2B2Tables, upload_id: int) -> int:
          
          return cls._delete_upload_id(tables.crc_connection, tables.observation_fact, upload_id)
docs: Delete all observation_fact records with the supplied upload_id
          :param tables: i2b2 sql connection
          :param upload_id: upload identifier to remove
          :return: number or records that were deleted