This reverts commit 63b37c0e.

Reason for revert: Seems to regress performance

Original change's description:
> Reland "[ptr-compr][x64][compiler] Support load map in compressed
> form"
>
> This is a reland of commit 6ca3adb9
>
> Fix build failed with V8_MAP_PACKING.
>
> Original change's description:
> > [ptr-compr][x64][compiler] Support load map in compressed form
> >
> > ...to allow pointer decompression at use-site.
> >
> > Bug: v8:13056, v8:7703
> > Change-Id: If369286814c76340a945cc2a9fd863888a813080
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3811737
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Commit-Queue: Hao A Xu <hao.a.xu@intel.com>
> > Cr-Commit-Position: refs/heads/main@{#82242}
>
> Bug: v8:13056, v8:7703
> Change-Id: Ic753558058f70f6ee7850019aac9235b87d0e56a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3815779
> Commit-Queue: Hao A Xu <hao.a.xu@intel.com>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#82322}

Bug: v8:13056, v8:7703
Change-Id: I8693af9189e214ec54a56149e0b29038e85838c2
Fixed: chromium:1352384
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3842931
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#82689}