[ptr-compr][page_allocator] Don't adjust address space limit

... before and after huge address space reservations since the Sandbox
on Linux does not limit the address space anymore (see
https://chromium-review.googlesource.com/c/chromium/src/+/1097553/).

Bug: v8:7703
Change-Id: Ia0dca0ce9e11c884522345cf2e9d5a25cdae275c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1545292
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#646910}
2 files changed