Follow up from https://crrev.com/c/3858226

- Remove include when not necessary.
- Choose platform/memory.h when appropriate.

Change-Id: Ic24ef89aefb754acccef896e6b59a7ba744ac2df
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3862504Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Adam Klein <adamk@chromium.org>
Auto-Submit: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83007}