Revert of [heap] Concurrently free empty typed slot set chunks. (patchset #3 id:40001 of https://codereview.chromium.org/2352423002/ )

Reason for revert:
TSAN failures on Linux64:

https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/11850

Also saw various threading-related flakiness on multiple bots.

Original issue's description:
> [heap] Concurrently free empty typed slot set chunks.
>
> BUG=chromium:648568
>
> Committed: https://crrev.com/ff8101d8e8d5e14dfa89de1252c510e6a0775539
> Cr-Commit-Position: refs/heads/master@{#39605}

TBR=ulan@chromium.org,hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:648568

Review-Url: https://codereview.chromium.org/2358333002
Cr-Commit-Position: refs/heads/master@{#39607}