Now that https://bugs.llvm.org/show_bug.cgi?id=40118 has been fixed and
rolled into V8, we can remove the workarounds for this Clang bug.

This also effectively reverts
https://chromium-review.googlesource.com/c/v8/v8/+/1280222

Bug: chromium:893437
Change-Id: Ia0d6d8ebdafafbc380b1b7a7809ef16effe50d71
Reviewed-on: https://chromium-review.googlesource.com/c/1425519Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58987}