[PyTorch] Extract non-template parts of torch::class_ (#54548)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/54548
We don't need to inline most of this class; doing so bloats code size and build time.
ghstack-source-id: 129765666
Test Plan:
Existing CI
buildsizebot some mobile apps
Reviewed By: jamesr66a
Differential Revision: D27277317
fbshipit-source-id: 7643aa35e4d794fee0a48a3bbe0890c2e428ae78
