Revert of Add logs to debug a flakiness on GPU Mac bots.

Revert of Add logs to debug a flakiness on GPU Mac bots. (patchset #2 id:20001 of https://codereview.chromium.org/684423005/)

Reason for revert:
It was temporary and no longer needed.

Original issue's description:
> Add logs to debug a flakiness on GPU Mac bots.
>
> This is temporary and will be removed after we pin down the issue.
>
> BUG=424024
> TEST=
> R=kbr@chromium.org
> TBR=dgozman@chromium.org
> NOTRY=true
>
> Committed: https://crrev.com/16aa242c3456dc68cd91ef2c683158799c8441b0
> Cr-Commit-Position: refs/heads/master@{#302371}

TBR=dgozman@chromium.org,kbr@chromium.org,pfeldman@chromium.org,yurys@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=424024
Committed: https://crrev.com/5a25b999f075b8560f804b95b27ffdb32a001b77
Cr-Commit-Position: refs/heads/master@{#302669}

[Zhenyao Mo, 2014-11-04 21:14:25]

Created Revert of Add logs to debug a flakiness on GPU Mac bots.

[commit-bot: I haz the power, 2014-11-04 21:16:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/698353002/1

[commit-bot: I haz the power, 2014-11-04 21:17:53]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-04 21:19:02]

Patchset 1 (id:??) landed as
https://crrev.com/5a25b999f075b8560f804b95b27ffdb32a001b77
Cr-Commit-Position: refs/heads/master@{#302669}