Revert of Reduce spam from CQ.

Revert of Reduce spam from CQ. (https://codereview.chromium.org/130983010/)

Reason for revert:
This did not fix the noise from the CQ. Reverting this and the previous patches.

Original issue's description:
> Reduce spam from CQ.
> 
> My previous change https://codereview.chromium.org/138173005/ made CQ
> post a message when the commit box was unchecked.  It shouldn't have
> posted it when CQ committed a change, but for some obscure reason it
> did.  Sometimes twice...
> 
> This patch unifies the way an issue is removed from the queue, and in
> particular, should eliminate most of the unwanted messages.  Some CQ
> messages about unchecked CQ box will still be posted when CQ drops it,
> and it is expected to be rare.
> 
> BUG=339116
> R=phajdan.jr@chromium.org
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=248553

TBR=phajdan.jr@chromium.org,iannucci@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=339116
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=248623

[Sergey Berezin, 2014-02-04 00:04:20]

Created Revert of Reduce spam from CQ.

[commit-bot: I haz the power, 2014-02-04 00:04:28]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-02-04 00:04:28]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a lowly provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[commit-bot: I haz the power, 2014-02-04 00:04:31]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-04 00:04:32]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-04 00:04:37]

CQ bit was unchecked on CL. Ignoring.

[Paweł Hajdan Jr., 2014-02-04 00:08:17]

LGTM stamp

[Sergey Berezin, 2014-02-04 00:09:10]

The CQ bit was checked by sergeyberezin@chromium.org

[commit-bot: I haz the power, 2014-02-04 00:09:19]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/sergeyberezin@chromium.org/136643007/1

[commit-bot: I haz the power, 2014-02-04 00:09:52]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-04 00:09:52]

Change committed as 248623

[commit-bot: I haz the power, 2014-02-04 00:09:53]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-04 00:10:00]

CQ bit was unchecked on CL. Ignoring.

[commit-bot: I haz the power, 2014-02-04 00:10:01]

CQ bit was unchecked on CL. Ignoring.