Revert of [heap] Simplify clearing of normalized map caches. (patchset #1 id:1 of https://codereview.chromium.org/2745183002/ )

Reason for revert:
https://bugs.chromium.org/p/v8/issues/detail?id=6135

Original issue's description:
> [heap] Simplify clearing of normalized map caches.
>
> Currently the incremental marking visitor treats elements of normalized
> map caches weakly by coloring the caches grey without pusing to marking
> deque.
>
> The mark-compact prologue then clears all normalized map caches.
>
> We can achieve similar effect by just clearing the caches in the marking
> visitor.
>
> BUG=chromium:694255
>
> Review-Url: https://codereview.chromium.org/2745183002
> Cr-Commit-Position: refs/heads/master@{#43941}
> Committed: https://chromium.googlesource.com/v8/v8/+/3d68306c71b17ebcb306b4e2ed8cae110c52229c

TBR=hpayer@chromium.org,verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:694255

Review-Url: https://codereview.chromium.org/2771703003
Cr-Commit-Position: refs/heads/master@{#44056}