pytorch

171f265d - Back out "Revert D25717510: Clean up some type annotations in benchmarks/fastrnns" (#50556)

Back out "Revert D25717510: Clean up some type annotations in benchmarks/fastrnns" (#50556) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/50556 Original commit changeset: 2bcc19cd4340 Test Plan: Soft revert hammer Reviewed By: walterddr, seemethere Differential Revision: D25917129 fbshipit-source-id: e5caad77655789d607b84eee820aa7c960e00f51