[clang] clang: Remove unnecessary host-supports-cuda from test (PR #171174)

[Artem Belevich via cfe-commits]

Artem-B wrote:

The change looks OK to me, but I don't have enough context to tell if there's something special about OpenMP parts. 
@jhuber6 may be the best person to stamp this PR.

https://github.com/llvm/llvm-project/pull/171174