Deprecate vitrage content
As project has been deprecated with [1], we remove project content.
[1] https://review.opendev.org/c/openstack/governance/+/982869
Depends-On: https://review.opendev.org/c/openstack/project-config/+/982878
Change-Id: I64cde62c35f38f56e4a5e0016f79fd2205577644
Signed-off-by: Dmitriy Rabotyagov dmitriy@adria-cloud.com