Removed some print statements

    df = self._standardize_df(pd.DataFrame(rows))

    for feature_type in feature_types:

      self._featurize_df(df, feature_type)

    print("featurize()")

    print("len(df)")

    print(len(df))

    print("out")

    print(out)

    save_to_disk(df, out)

    df_loaded = load_from_disk(out)