## Link to GitHub Issue or related Pull Request, if one exists
Fixes#779
Regressed by #720
## Description of change
#720 introduced a static dependency on DX9 which caused `d3d9.dll` to be
loaded at boot from `system32`. Some third party hooks (like
ifs_layeredfs and dxvk) rely on supplying a custom `d3d9.dll` in the DLL
search path (usually in modules) but this change caused Windows to skip
that check.
Remove the hard dependency on d3d9 and add a CMake check to ensure that
compiled binaries do not accidentally introduce new static imports in
the future.
## Testing
Confirmed that dxvk runs again.
bicarus