This reverts commit c924f54e.

Reason for revert: Suspect for GPU failures:
https://ci.chromium.org/p/v8/builders/ci/Linux%20V8%20FYI%20Release%20(NVIDIA)/7641

Original change's description:
> [turbofan][ptr-compr] Remove redundant ChangeTaggedToCompressed
> 
> The final goal is to eliminate it altogether. This CL just
> eliminate the redundant ones.
> 
> Bug: v8:7703
> Change-Id: If6e718c373fca7c65ce46c347533ec4550fbc444
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1950968
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#65398}

TBR=tebbi@chromium.org,solanes@chromium.org

Change-Id: Id280d7b0a850e3aacd56f839a0fc36d02a88f34c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7703
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1960286Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65403}