[libcxx-commits] [libcxx] [libc++] Remove unused __parent_pointer alias from __tree and map (PR #172185)

[Andrei Topala via libcxx-commits]

Krechals wrote:

I don’t have access to the Reviewers section, so I’m tagging @ldionne for review

https://github.com/llvm/llvm-project/pull/172185