pytorch

f1ad5e08 - Revert D13709409: [pytorch][PR] Exclude pyi from flake8 checks.

Revert D13709409: [pytorch][PR] Exclude pyi from flake8 checks. Differential Revision: D13709409 Original commit changeset: ec4a959e146f fbshipit-source-id: feabed5719a0bfdfe7979074b7e1ba9756c4ba25