Revert of [heap] Refactor evacuation verifier (patchset #1 id:1 of https://codereview.chromium.org/2790373002/ )

Reason for revert:
Speculative revert. Breaks https://build.chromium.org/p/client.v8/builders/V8%20Win64%20-%20debug/builds/16112 and seems to lead to flakes.

Original issue's description:
> [heap] Refactor evacuation verifier
>
> BUG=chromium:651354
>
> Review-Url: https://codereview.chromium.org/2790373002
> Cr-Commit-Position: refs/heads/master@{#44375}
> Committed: https://chromium.googlesource.com/v8/v8/+/396f1e242184b936c61dda7a14d1306d43b1863c

TBR=ulan@chromium.org,mlippautz@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:651354

Review-Url: https://codereview.chromium.org/2795903004
Cr-Commit-Position: refs/heads/master@{#44377}