This reverts commit f4ebbb3f.

Reason for revert: Suspected to make things worse than better, e.g.:
https://chromium-swarm.appspot.com/task?id=3b4b2f864304f010&refresh=10&show_raw=1
and
https://chromium-swarm.appspot.com/task?id=3b4b2f8045da5510&refresh=10&show_raw=1

Original change's description:
> [test] Let fuzzer total timeout also stop the execution loop
> 
> TBR=sergiyb@chromium.org
> 
> Bug: v8:6917
> Change-Id: I5bc8f49dc01d98949e3efab01192c663de8027bf
> Reviewed-on: https://chromium-review.googlesource.com/888578
> Commit-Queue: Michael Achenbach <machenbach@chromium.org>
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#50887}

TBR=machenbach@chromium.org,sergiyb@chromium.org,majeski@google.com

Change-Id: Ib9f530348594e361d491e827aa03a38f41da9f1a
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6917
Reviewed-on: https://chromium-review.googlesource.com/888519Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50894}