Remove THCNumerics (#66388)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/66388
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D31547710
Pulled By: ngimel
fbshipit-source-id: 20710328f2e5fc2e931a3f8ba9b4243acc310d54
