Revert of Adding Maps page to page_sets for telemetry.

Revert of Adding Maps page to page_sets for telemetry. (patchset #7 id:310001 of https://codereview.chromium.org/955653003/)

Reason for revert:
Failed tests in drag_unittest.py:

http://build.chromium.org/p/chromium.mac/buildstatus?builder=Mac10.9%20Tests&number=3803

Original issue's description:
> Adding Maps page to page_sets for telemetry.
>
> This CL adds google maps page to telemetry, and runs a synthetic drag
> gesture on the page. This helps testing of maps page in telemetry to
> track the performance on desktop chrome.
>
> BUG=457148
>
> Committed: https://crrev.com/f502701b2bcc43c05d82e5780b2d6cf2d326bc23
> Cr-Commit-Position: refs/heads/master@{#319135}

TBR=skyostil@chromium.org,picksi@chromium.org,petrcermak@chromium.org,ssid@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=457148
Committed: https://crrev.com/9589b67f3b415a742c7f65ebd106e202f5a01f42
Cr-Commit-Position: refs/heads/master@{#319171}

[xhwang, 2015-03-05 00:19:55]

Created Revert of Adding Maps page to page_sets for telemetry.

[commit-bot: I haz the power, 2015-03-05 00:21:09]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/982683003/1

[commit-bot: I haz the power, 2015-03-05 00:22:12]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-05 00:22:50]

Patchset 1 (id:??) landed as
https://crrev.com/9589b67f3b415a742c7f65ebd106e202f5a01f42
Cr-Commit-Position: refs/heads/master@{#319171}