[PATCH] D53670: Revert "Teach __libcpp_is_floating_point that __fp16 and _Float16 are"

[Eric Fiselier via Phabricator]

EricWF added a comment.

Sorry I'm late to the party, but we should just be falling back to `__is_floating_point` if we have it. Since it will always give us the answer we want. (Including for `__float128` which we don't handle ATM).


Repository:
  rL LLVM

https://reviews.llvm.org/D53670