[libcxx-commits] [libcxx] [llvm] [LIT] remove `to_unicode`, `to_string`, and `to_bytes` helpers (PR #165950)

[Alexander Richardson via libcxx-commits]

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

One minor grammar nit otherwise LGTM 

https://github.com/llvm/llvm-project/pull/165950