[NOOP][clangformat][codemod] Enable CLANGFORMAT (#67854)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/67854
Test Plan: Visual inspection. Sandcastle.
Reviewed By: zertosh
Differential Revision: D32173077
fbshipit-source-id: 10ab4b0afa18c7be4fab3e3564d9b479a7a48cb5
