Revert r301089 "[builtins] Implement emulated TLS on Windows."
This broke the self-host build on Windows (PR32777).
Original commit message:
> [builtins] Implement emulated TLS on Windows.
>
> Summary:
> LLVM JIT needs to be able to use emulated TLS on all platforms, and this provides a reference one can compile to enable emutls for Linux/Mac/Windows.
>
> Reviewers: chh, howard.hinnant
>
> Reviewed By: chh
>
> Subscribers: mgorny, llvm-commits
>
> Differential Revision: https://reviews.llvm.org/D30787
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@301274 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed
