Revert of [turbofan] Extend escape analysis to reduce certain CheckMaps. (patchset #1 id:1 of https://codereview.chromium.org/2964473002/ )

Reason for revert:
Speculative revert for tiny fire on Canary (crbug.com/738781)

Original issue's description:
> [turbofan] Extend escape analysis to reduce certain CheckMaps.
>
> Enable the experimental support in escape analysis to deal with
> constant-foldable CheckMaps nodes and remove them from the effect
> chain w/o blocking the scalar replacement of the object.
>
> BUG=v8:4586,v8:5267
> R=tebbi@chromium.org
>
> Review-Url: https://codereview.chromium.org/2964473002
> Cr-Commit-Position: refs/heads/master@{#46311}
> Committed: https://chromium.googlesource.com/v8/v8/+/adf7f54e24c4b31207b4df0e30c28f7579b18f5c

TBR=tebbi@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=v8:4586,v8:5267

Review-Url: https://codereview.chromium.org/2970663002
Cr-Commit-Position: refs/heads/master@{#46372}