Revert of Update buildbots to parse new telemetry JSON format.

Revert of Update buildbots to parse new telemetry JSON format. (patchset #7 id:120001 of https://codereview.chromium.org/545803002/)

Reason for revert:
Broke the build: http://build.chromium.org/p/chromium.perf/builders/Mac%2010.8%20Perf%20%282%29/builds/7888/steps/page_cycler.intl_ar_fa_he/logs/stdio

Original issue's description:
> Add a new parser for telemetry JSON format, and tell telemetry to use the new format.
> 
> BUG=
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=291952

TBR=stip@chromium.org,smut@google.com,luqui@chromium.org,eakuefner@chromium.org,qyearsley@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=291955

[sullivan, 2014-09-12 20:31:07]

Created Revert of Update buildbots to parse new telemetry JSON format.

[commit-bot: I haz the power, 2014-09-12 20:32:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/565973005/1

[commit-bot: I haz the power, 2014-09-12 20:33:22]

Committed patchset #1 (id:1) as 291955