Removing another unneeded line

      shard_basenames = ["shard-%d" % shard_num for shard_num in range(n_rows)]

    for i, basename in zip(range(n_rows), shard_basenames):

      logger.info("Shuffling shard %d/%d" % (i, n_rows))

      row = self.metadata_df.iloc[i]

      X, y, w, ids = self.get_shard(i)

      n = X.shape[0]

      permutation = np.random.permutation(n)