[clang] [clang-cl][flang][dxc] Fix opts exposed to clang-cl/dxc by mistake (PR #118640)

[Tarun Prabhu via cfe-commits]

tarunprabhu wrote:

> > Better to double check with author who specified those CLOption.
> 
> Do you mean the person that added `CLOption` to these flags? That was @tarunprabhu, but IIUC that was by mistake; his intention was to extend these flags only to Flang.

That is correct, the intention was to extend those flags only to Flang



https://github.com/llvm/llvm-project/pull/118640