Retire Freezer DR

As no interest or concerns were raised for retirement for freezer-dr [1]
we proceed with the process of project retirement.

[1] https://lists.openstack.org/archives/list/openstack-discuss@lists.openstack.org/message/3VQUSJHBOOH3MKIMHUINNV75REF3GS7Z/

Depends-On: https://review.opendev.org/c/openstack/freezer-dr/+/938182
Change-Id: Ifef0d0e86336b673c70a5562f67e31000bb0ef19

reference/legacy.yaml

@@ -210,6 +210,17 @@ ec2-api:
       repos:
         - openstack/ec2api-tempest-plugin
 
+freezer:
+  irc-channel: openstack-freezer
+  partial: yes
+  service: Backup, Restore, and Disaster Recovery service
+  url: https://wiki.openstack.org/wiki/Freezer
+  deliverables:
+    freezer:
+      retired-on: 2024-12-23
+      repos:
+        - openstack/freezer-dr
+
 fuel:
   irc-channel: fuel
   service: Deployment service

reference/projects.yaml

@@ -269,7 +269,6 @@ freezer:
       repos:
         - openstack/freezer
         - openstack/freezer-api
-        - openstack/freezer-dr
     freezer-specs:
       release-management: none
       repos: