Remove unnecessary dbus calls to canterbury

Since we are no longer depending on canterbury DBUS api,
it is not needed to wait for canterbury to appear.

Signed-off-by: Rohan Madgula <Rohan.Madgula@in.bosch.com>
Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D5768