Removing some commented out cruft

    # metadata

    if not self.legacy_metadata:

      for shard_num in range(n_rows):

        #row = self.metadata_df.iloc[shard_num]

        #if row['X_shape'] is not None:

        #  shard_X_shape = make_tuple(str(row['X_shape']))

        #else:

        #  shard_X_shape = tuple()

        #if n_tasks > 0:

        #  if row['y_shape'] is not None:

        #    shard_y_shape = make_tuple(str(row['y_shape']))

        #  else:

        #    shard_y_shape = tuple()

        #  if row['w_shape'] is not None:

        #    shard_w_shape = make_tuple(str(row['w_shape']))

        #  else:

        #    shard_w_shape = tuple()

        #else:

        #  shard_y_shape = tuple()

        #  shard_w_shape = tuple()

        #if row['ids_shape'] is not None:

        #  shard_ids_shape = make_tuple(str(row['ids_shape']))

        #else:

        #  shard_ids_shape = tuple()

        shard_X_shape, shard_y_shape, shard_w_shape, shard_ids_shape = self._get_shard_shape(

            shard_num)

        if shard_num == 0: