Fixed the Windows build. (#5596)
Fixed the Windows build.
Fixes applied:
- Remove some more ops that don't build on Windows.
- Remove the use of symlinks that didn't work correctly and replace with
`shutil.copytree()`.
- Small fixes to make the C++ code compile.
Tested with Python 3.9 and CUDA 12.1.
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Co-authored-by: Costin Eseanu <costineseanu@gmail.com>
Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>