This reverts commit 9a19ce25.

Reason for revert:
https://build.chromium.org/p/client.v8/builders/V8%20Linux64%20TSAN/builds/20359

Original change's description:
> [profiler] Ensure there's a single ProfilerListener per isolate.
> 
> BUG=v8:7662
> 
> Change-Id: I8128ac96bcd2dc01b318c55843c4416bdd17c7ae
> Reviewed-on: https://chromium-review.googlesource.com/1013318
> Commit-Queue: Alexei Filippov <alph@chromium.org>
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#52653}

TBR=alph@chromium.org,yangguo@chromium.org

Change-Id: I3c3b6eb8d6f9911fa318f24a2e6e74180b83398e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:7662
Reviewed-on: https://chromium-review.googlesource.com/1015561Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52654}