[clang] [libc] [llvm] [OpenMP][libc] Remove special handling for OpenMP printf (PR #98940)

[Joseph Huber via llvm-commits]

jhuber6 wrote:

> Do we have the varargs handling pass run even with O0?

Yes, it's a mandatory pass for NVPTX and AMDGPU. I added an extra pass in LTO recently just to let vararg functions be inlined, it's not necessary for correctness.

https://github.com/llvm/llvm-project/pull/98940