[libcxx-commits] [libcxx] [libcxx] removes non-customisation-point objects from `__cpo` namespace (PR #76542)

[Konstantin Varlamov via libcxx-commits]

var-const wrote:

@cjdb Do you feel this change is still worth pursuing in the light of [P3136R0](https://github.com/cplusplus/papers/issues/1790)? (not voted in yet, but had strong support in SG9 and seems likely to pass). The new wording removes the distinction between niebloids and CPOs -- everything is technically a CPO now (if I'm reading it correctly), even if not everything is intended to be customizable. 

https://github.com/llvm/llvm-project/pull/76542