[Telemetry] Remove adb restart hack.

[Telemetry] Remove adb restart hack.

It causes problems when running multiple Telemetries in parallel in
certain environments and also causes problems with certain devices.

BUG=

Committed: https://crrev.com/454927d86f57536f47a78fded536855b380b200c
Cr-Commit-Position: refs/heads/master@{#292009}

[tonyg, 2014-08-26 20:28:22]

tonyg@chromium.org changed reviewers:
+ dtu@chromium.org

[dtu, 2014-08-26 20:29:00]

The CQ bit was checked by dtu@chromium.org

[dtu, 2014-08-26 20:29:01]

lgtm

[commit-bot: I haz the power, 2014-08-26 20:30:38]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tonyg@chromium.org/499073005/1

[commit-bot: I haz the power, 2014-08-26 22:09:28]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  ios_rel_device on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device/bu...)

[commit-bot: I haz the power, 2014-08-26 22:43:47]

Committed patchset #1 (1) as 26d293cfb33c680bc83ed339dd45db72a12eb9e9

[commit-bot: I haz the power, 2014-09-10 02:46:38]

Patchset 1 (id:??) landed as
https://crrev.com/454927d86f57536f47a78fded536855b380b200c
Cr-Commit-Position: refs/heads/master@{#292009}