- Rename AssemblerOptions::enable_root_array_delta_access to
  enable_root_relative_access.
- Remove the identical but duplicated
  PipelineData::roots_relative_addressing_enabled.

Bug: v8:9594
Change-Id: I41c5ddc3c1ad9681dce8402640c50529f00141cf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3043956
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75852}