benchmark

e811b50d - Implement unicode_csv_reader because it was removed in upstream. (#795)

Implement unicode_csv_reader because it was removed in upstream. (#795) Summary: Recent torchtext API changes break the legacy code we use in `attention_is_all_you_need_pytorch` and `pytorch_struct` models. Adding the removed functions so that we can continue using them. Pull Request resolved: https://github.com/pytorch/benchmark/pull/795 Reviewed By: erichan1 Differential Revision: D34874088 Pulled By: xuzhao9 fbshipit-source-id: bc31c26a187c88169a379f26a4dc4208382bb14e