[libcxx-commits] [libcxx] [libc++][test] Drop unnecessary `typename` and `template` for `layout_meow::mapping` (PR #74571)

[Louis Dionne via libcxx-commits]

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

Thanks for the cleanup. Not sure how they slipped in since they are clearly in non-dependent contexts.

https://github.com/llvm/llvm-project/pull/74571