Fix extra bracket syntax error in bisect-builds.py

Fix extra bracket syntax error in bisect-builds.py

[1] introduced the following syntax error:
$ ./tools/bisect-builds.py --archive=mac64 -g 349700 -b 370248
  File "./tools/bisect-builds.py", line 897
    return m.group(1)]
                     ^

Simple fix to just remove the extra bracket. I'm not a python expert
so hopefully this is the most pythonic approach to bracket removal.

[1] https://crrev.com/08c596825aa5530f6364e59ecff7a8ac1323f9b8

NOTRY=true

[pdr., 2016-07-12 21:42:21]

pdr@chromium.org changed reviewers:
+ dimu@chromium.org

[pdr., 2016-07-12 21:44:09]

Description was changed from

==========
Fix extra bracket syntax error in bisect-builds.py

[1] introduced the following syntax error:
$ ./tools/bisect-builds.py --archive=mac64 -g 349700 -b 370248
  File "./tools/bisect-builds.py", line 897
    return m.group(1)]
                     ^

Simple fix to just remove the extra bracket. I'm not a python expert
so hopefully this is the most pythonic approach to bracket removal.

[1] https://crrev.com/08c596825aa5530f6364e59ecff7a8ac1323f9b8
==========

to

==========
Fix extra bracket syntax error in bisect-builds.py

[1] introduced the following syntax error:
$ ./tools/bisect-builds.py --archive=mac64 -g 349700 -b 370248
  File "./tools/bisect-builds.py", line 897
    return m.group(1)]
                     ^

Simple fix to just remove the extra bracket. I'm not a python expert
so hopefully this is the most pythonic approach to bracket removal.

[1] https://crrev.com/08c596825aa5530f6364e59ecff7a8ac1323f9b8

NOTRY=true
==========

[pdr., 2016-07-13 16:39:35]

pdr@chromium.org changed reviewers:
+ chrishtr@chromium.org

[chrishtr, 2016-07-13 16:57:52]

The CQ bit was checked by chrishtr@chromium.org

[chrishtr, 2016-07-13 16:57:52]

lgtm

[commit-bot: I haz the power, 2016-07-13 16:58:45]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-07-13 17:08:20]

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

[commit-bot: I haz the power, 2016-07-13 17:08:21]

Try jobs failed on following builders:
  chromium_presubmit on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[pdr., 2016-07-13 17:33:12]

On 2016/07/13 at 17:08:21, commit-bot wrote:
> Try jobs failed on following builders:
>   chromium_presubmit on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

Looks like fmalita beat me to it:
https://chromium.googlesource.com/chromium/src/+/a898d221e7a213f2b011c1751276...