Revert of Implement owners check in presubmit for Gerrit. (patchset #5 id:80001 of https://codereview.chromium.org/1927773002/ )

Reason for revert:
now it doesn't work for gerrit. Damn it.

Original issue's description:
> Implement owners check in presubmit for Gerrit.
> 
> R=machenbach@chromium.org,phajdan.jr@chromium.org
> BUG=605563
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=300350

TBR=machenbach@chromium.org,phajdan.jr@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=605563

Review-Url: https://codereview.chromium.org/1935563002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300352 0039d316-1c4b-4281-b951-d872f2087c98