pytorch

9cb003a9 - Add typing check of alpha for torch.sub and code clean up.

Add typing check of alpha for torch.sub and code clean up. Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/28298 Differential Revision: D18017923 Pulled By: nairbv fbshipit-source-id: 2c4b3f96eb005dfb70e1b7ff87d28eb79b9300dd