Revert of [inspector] Test how Profiler interacts with multiple sessions (patchset #3 id:30001 of https://codereview.chromium.org/2920313002/ )

Reason for revert:
DCHECKS triggering in debug build.

Original issue's description:
> [inspector] Test how Profiler interacts with multiple sessions
>
> BUG=chromium:590878
>
> Review-Url: https://codereview.chromium.org/2920313002
> Cr-Original-Commit-Position: refs/heads/master@{#45715}
> Committed: https://chromium.googlesource.com/v8/v8/+/754f81e20e9e7abfb3ce82e73a3389a72f4657a6
> Review-Url: https://codereview.chromium.org/2920313002
> Cr-Commit-Position: refs/heads/master@{#45717}
> Committed: https://chromium.googlesource.com/v8/v8/+/679604bdd2991a19cadf7ab5c462fc6f368f32fc

TBR=alph@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:590878

Review-Url: https://codereview.chromium.org/2926533003
Cr-Commit-Position: refs/heads/master@{#45736}