Move flags that do not work on MSVC (#18686)
Summary:
MSVC errors on these flags as they are not supported
Pull Request resolved: https://github.com/pytorch/pytorch/pull/18686
Differential Revision: D14704254
Pulled By: ezyang
fbshipit-source-id: 936d33ed6b7474d7774a49505cdac50dbe8dd99a
