This reverts commit ecc61b30.

Reason for revert: I will reland with the flag disabled.

Original change's description:
> [heap] Add a flag for performing incremental marking on allocation
> 
> The flag is true by default and passing
> --noincremental-marking-on-allocation disables starting of incremental
> marking on allocation and incremental marking steps on allocation.
> 
> Change-Id: I4537e0eeaaf93fb713fcacd3860e29b98df441fc
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2154194
> Reviewed-by: Hannes Payer <hpayer@chromium.org>
> Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#67228}

TBR=ulan@chromium.org,hpayer@chromium.org,mlippautz@chromium.org

Change-Id: I7dd847513d1628e7137d9e10cb5e9058781a9634
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2154803Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67231}