Pyre-ify torch.jit.interface's (#54084)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/54084
Test Plan: Sandcastle
Reviewed By: derekmod-fb
Differential Revision: D27075597
fbshipit-source-id: 992592c88320df61e3a65eb0ac4ba5705b0b5802
