Removes spurious self-include in src/heap/memory-chunk.h

Bug: v8:10473
Change-Id: I0bdf3b6b62f3b3a241225a99d681ddc1f1bd6bc5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2181329
Auto-Submit: Dan Elphick <delphick@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67579}