Revert of [profiler] fix memory leak for code entries for runtime callstats. (patchset #1 id:1 of https://codereview.chromium.org/2586923002/ )

Reason for revert:
Looks like the layout tests want these leaks:
https://build.chromium.org/p/client.v8.fyi/builders/V8-Blink%20Linux%2064/builds/12151

See:
https://github.com/v8/v8/wiki/Blink-layout-tests

Original issue's description:
> [profiler] fix memory leak for code entries for runtime callstats.
>
> Track allocated code entries and delete at the end. This is what we
> do in ProfileListener too.
>
> R=alph@chromium.org, cbruni@chromium.org
> BUG=v8:5753
>
> Review-Url: https://codereview.chromium.org/2586923002
> Cr-Commit-Position: refs/heads/master@{#41793}
> Committed: https://chromium.googlesource.com/v8/v8/+/d0bb789f0358851b6580a274e2b5f2a8f728f44b

TBR=cbruni@chromium.org,alph@chromium.org,yangguo@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:5753

Review-Url: https://codereview.chromium.org/2590483002
Cr-Commit-Position: refs/heads/master@{#41806}