Remove THCGeneral.cpp (#66766)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/66766
Test Plan: Imported from OSS
Reviewed By: zou3519
Differential Revision: D31721647
Pulled By: ngimel
fbshipit-source-id: 5033a2800871c8745a1a92e379c9f97c98af212e
