Revert of Enabling audio quality test on mac.

Revert of Enabling audio quality test on mac. (patchset #1 id:1 of https://codereview.chromium.org/599103006/)

Reason for revert:
There is one stubborn bot that is unreachable from VNC; reverting until we can sort that out.

Original issue's description:
> Enabling audio quality test on mac.
>
> Note: will land on Monday; need to watch bots so that they execute the
> test right.
>
> TBR=vrk@chromium.org
> BUG=418034
>
> Committed: https://crrev.com/c4e4aaaf43c0da2a01c0f32be737dcbbd5f13e92
> Cr-Commit-Position: refs/heads/master@{#297166}

TBR=vrk@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=418034
Committed: https://crrev.com/18efcd361beccd5eca81b1a046c30fde72a88953
Cr-Commit-Position: refs/heads/master@{#297257}

[phoglund_chromium, 2014-09-29 21:01:32]

Created Revert of Enabling audio quality test on mac.

[commit-bot: I haz the power, 2014-09-29 21:02:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/613833002/1

[commit-bot: I haz the power, 2014-09-29 21:03:58]

Committed patchset #1 (id:1) as 34bec4fc0c4b7349796d858f718a33d357c7e18c

[commit-bot: I haz the power, 2014-09-29 21:08:16]

Patchset 1 (id:??) landed as
https://crrev.com/18efcd361beccd5eca81b1a046c30fde72a88953
Cr-Commit-Position: refs/heads/master@{#297257}

[phoglund_chromium, 2014-09-30 07:08:16]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/612333002/ by phoglund@chromium.org.

The reason for reverting is: Relanding: bots are now configured..