[libcxx-commits] [libcxx] [libc++][test] Move format.functions ASCII tests to `libcxx/test/libcxx` (PR #78661)

[Mark de Wever via libcxx-commits]

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

Thanks @cpplearner @StephanTLavavej! LGTM!

https://github.com/llvm/llvm-project/pull/78661