Revert of [strong] checking of this & super in constructors

Revert of [strong] checking of this & super in constructors (patchset #7 id:110001 of https://codereview.chromium.org/1024063002/)

Reason for revert:
[Sheriff] Breaks mac gc stress:
http://build.chromium.org/p/client.v8/builders/V8%20Mac%20GC%20Stress/builds/1024

Original issue's description:
> [strong] checking of this & super in constructors
>
> R=dslomov@chromium.org, marja@chromium.org
> BUG=v8:3956
> LOG=N
>
> Enforces for constructors that
> - the only use of 'super' is the super constructor call
> - the only use of 'this' is a property assignment
> - both of these must happen at the top-level of the body
> - 'this' may only be assigned after the 'super' call
> - 'return' may only be used after the last assignment to 'this'
>
> Not yet working for arrow functions (there might be deeper bugs with those).
>
> Committed: https://crrev.com/580d66bcda66220d2f3062ac58daf925436df74c
> Cr-Commit-Position: refs/heads/master@{#27977}

TBR=dslomov@chromium.org,marja@chromium.org,conradw@chromium.org,rossberg@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:3956
Committed: https://crrev.com/b3875aacbbf53ed7a743ce07526cce8c460ade40
Cr-Commit-Position: refs/heads/master@{#27991}

[Michael Achenbach, 2015-04-22 08:00:19]

Created Revert of [strong] checking of this & super in constructors

[commit-bot: I haz the power, 2015-04-22 08:00:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1105453002/1

[commit-bot: I haz the power, 2015-04-22 08:00:44]

Committed patchset #1 (id:1)

[Michael Achenbach, 2015-04-22 11:04:17]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1073103004/ by machenbach@chromium.org.

The reason for reverting is: Was an infrastructure problem..

[commit-bot: I haz the power, 2015-04-22 13:19:03]

Patchset 1 (id:??) landed as
https://crrev.com/b3875aacbbf53ed7a743ce07526cce8c460ade40
Cr-Commit-Position: refs/heads/master@{#27991}