move control of jobs to os-vif
move control of jobs to os-vif

- This change removes the triggering of the
  legacy-tempest-dsvm-nova-os-vif job against os-vif
  form project-config in favor of managing jobs in repo.

Depends-on: https://review.openstack.org/#/c/559401/
Change-Id: Ic9fdd069bd507e07423821cbcf8249f40ace1a97

openstack-infra/project-config,openstack-infra/project-config