Removing NumberToSize on PPC and S390.

Port ad44c258

Change-Id: Ic5d3132f1bb396f07a26399d2e3f6aca4689aa3f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1554227
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60691}