Revert of [es6] Fix Function and GeneratorFunction built-ins subclassing.

Revert of [es6] Fix Function and GeneratorFunction built-ins subclassing. (patchset #4 id:80001 of https://codereview.chromium.org/1428823002/ )

Reason for revert:
Buildbot failures

Original issue's description:
> [es6] Fix Function and GeneratorFunction built-ins subclassing.
>
> BUG=v8:3101, v8:3330
> LOG=Y
>
> Committed: https://crrev.com/99e7f872d3d0a5fb799dcbafb05537cda491314a
> Cr-Commit-Position: refs/heads/master@{#31708}

TBR=verwaest@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3101, v8:3330
Committed: https://crrev.com/2210cc84de92a133580b4ef98965612ffe3f8588
Cr-Commit-Position: refs/heads/master@{#31709}

[Igor Sheludko, 2015-11-02 11:58:43]

Created Revert of [es6] Fix Function and GeneratorFunction built-ins
subclassing.

[commit-bot: I haz the power, 2015-11-02 11:58:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1413723008/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1413723008/1

[commit-bot: I haz the power, 2015-11-02 11:59:03]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-02 11:59:20]

Patchset 1 (id:??) landed as
https://crrev.com/2210cc84de92a133580b4ef98965612ffe3f8588
Cr-Commit-Position: refs/heads/master@{#31709}