These don't improve codegen and are unecessary overhead.

BUG=v8:9684

Change-Id: I2feb1c1200eb0c347f4a21be5444b6a15924e6de
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2903162Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74704}