Remove support for local garden-o-matic

The server version has won. Any features missing
from the server version should be added there.

BUG=389681
R=abarth@chromium.org, abarth, dpranke

Review URL: https://codereview.chromium.org/351873005

git-svn-id: svn://svn.chromium.org/blink/trunk@177141 bbb929c8-8fbe-4397-9dbb-9b2b20218538