Drop the old python35 job
Drop the old python35 job

We are running the regular jobs with constraints now so we don't need to
be running this job. Additionally it's not functioning correctly with
the switch to bionic

Change-Id: I41bf5002bd40654d55456a5cdafcef6b76b1f62e

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates