[clang] clang: Remove BoundArch assert in AMDGPUToolChain::addClangTargetOptions (PR #203060)

[Joseph Huber via cfe-commits]

https://github.com/jhuber6 commented:

Any clue why Flang uses this instead of the OpenMP or HIP one?

https://github.com/llvm/llvm-project/pull/203060