Removed --output_buildbot_annotations from prepare step since it's not necessary to have substeps there. Reduced timeout to 30 mins. Removed http launching since telemetry launches it's own.
Removed --output_buildbot_annotations from prepare step since it's not
necessary to have substeps there.
Reduced timeout to 30 mins.
Removed http launching since telemetry launches it's own.

BUG=
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/12619008

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@190422 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build