[Telemetry] Remove page_test.DidRunTest hook.

[Telemetry] Remove page_test.DidRunTest hook.

BUG=435757, 455391
CQ_EXTRA_TRYBOTS=tryserver.chromium.perf:linux_perf_bisect;tryserver.chromium.perf:mac_perf_bisect;tryserver.chromium.perf:android_nexus5_perf_bisect

Committed: https://crrev.com/604751d0d6fbbc9bc465aa78f41b8a7117d4c182
Cr-Commit-Position: refs/heads/master@{#329862}

[nednguyen, 2015-05-13 22:27:28]

nednguyen@google.com changed reviewers:
+ sullivan@chromium.org

[sullivan, 2015-05-14 13:59:04]

lgtm

[nednguyen, 2015-05-14 14:56:07]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2015-05-14 14:56:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1142453002/1

[commit-bot: I haz the power, 2015-05-14 16:58:00]

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

[commit-bot: I haz the power, 2015-05-14 16:58:02]

Try jobs failed on following builders:
  win_perf_bisect on tryserver.chromium.perf (JOB_TIMED_OUT, no build URL)

[nednguyen, 2015-05-14 16:58:58]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2015-05-14 16:59:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1142453002/1

[commit-bot: I haz the power, 2015-05-14 17:05:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-14 17:06:25]

Patchset 1 (id:??) landed as
https://crrev.com/604751d0d6fbbc9bc465aa78f41b8a7117d4c182
Cr-Commit-Position: refs/heads/master@{#329862}