[clang] Revert "[Clang][OpenMP][Driver] Make linker to link Device RTL when built for SPIRV" (PR #181876)

[Nick Sarnie via cfe-commits]

sarnex wrote:

To add some context, the previous PR unifies the logic between SPIR-V and other GPU targets, which is great, but unfortunately the SPIR-V toolchian (the linker in this case), can't handle the same input as other targets, so SPIR-V needs to be singled out.

https://github.com/llvm/llvm-project/pull/181876