Finally remove the old data-utils

All active plugins now switched to new location of data-utils and
we are good to remove the old data-utils.
- http://lists.openstack.org/pipermail/openstack-dev/2017-July/120086.html

One active plugin is left to merge which gate is already broken
and patch can be merged once they fix the gate.
- https://review.opendev.org/c/x/ranger-tempest-plugin/+/768760

Change-Id: Iaf783000f7aa273446c02d390f508bc535224543
3 files changed