[libcxx-commits] [libcxx] [libc++] Removes Clang-18 specific code. (PR #134496)

[Nikolas Klauser via libcxx-commits]

https://github.com/philnik777 approved this pull request.

LGTM with the C++03 change reverted.

https://github.com/llvm/llvm-project/pull/134496