def delete_composite_indexes(self, entity, composites):
    row_keys = datastore_server.DatastoreDistributed.\
      get_composite_indexes_rows([entity], composites)
    self.db_access.batch_delete(dbconstants.COMPOSITE_TABLE,
      row_keys, column_names=dbconstants.COMPOSITE_SCHEMA)
Deletes composite indexes for an entity.
dataset/ETHPy150Open AppScale/appscale/AppDB/groomer.py/DatastoreGroomer.delete_composite_indexes