Remove find_dependencies from Telemetry

Remove find_dependencies from Telemetry

Telemetry's find_dependencies has reached the end of its deprecation cycle, and
the version in tools/perf is now the recommended one to use.

BUG=528331
Committed: https://crrev.com/76bf32db265f5097b405d2318c0f26c62e9c4854
Cr-Commit-Position: refs/heads/master@{#361185}

[eakuefner, 2015-11-23 19:24:09]

eakuefner@chromium.org changed reviewers:
+ aiolos@chromium.org, nednguyen@google.com

[eakuefner, 2015-11-23 19:24:09]

Please note that ChromeOS have already switched to using the tools/perf version
of this script in crbug.com/547219

[nednguyen, 2015-11-23 19:30:50]

The CQ bit was checked by nednguyen@google.com

[nednguyen, 2015-11-23 19:30:50]

lgtm

[commit-bot: I haz the power, 2015-11-23 19:35:26]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1472923003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1472923003/1

[commit-bot: I haz the power, 2015-11-23 21:15:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-23 21:16:15]

Patchset 1 (id:??) landed as
https://crrev.com/76bf32db265f5097b405d2318c0f26c62e9c4854
Cr-Commit-Position: refs/heads/master@{#361185}