Disable geocoding options in on-premise

Ticket related #1227
Disable geocoding by (city names, admin. regions, postal codes and ip)
if the feature flag ‘on_premise' is enabled.
Also, I have deleted lib/assets/test/spec/test_runner.html because it
wasn’t being used.

Please, @javisantana @xavijam @viddo  could you review it? Thanks!
Sorry, but I understood (at #frontend chat talk with @viddo ) that we had to delete that file because it wasn't being used.