[libcxx-commits] [libcxx] [libc++][NFC] Remove _LIBCPP_FREESTANDING (PR #176907)

[Louis Dionne via libcxx-commits]

ldionne wrote:

After looking at https://docs.google.com/document/d/1yC-3bE6pefVizUhfiUs1Shv11EzuL0KOklGSLqto6dk/edit?tab=t.0#heading=h.fw5cs9onzpmc, it seems like we both remember slightly different outcomes. Still, I don't think it really changes the outcome for this patch: we should remove the macro since it's unused and confusing, but we should avoid claiming more than the bare minimum about our stance w.r.t. freestanding. We can make that stance clearer after a RFC when/if we want to do that.

https://github.com/llvm/llvm-project/pull/176907