Retire sushy-cli - Step 6

Remove Repository from the Governance Repository[1]

The sushy-cli project has been inactive for a while and as announced in
the ML[2] it will be retired.

[1]https://docs.openstack.org/project-team-guide/repository.html#step-6-remove-repository-from-the-governance-repository
[2]http://lists.openstack.org/pipermail/openstack-discuss/2021-May/022405.html

Depends-On: https://review.opendev.org/c/openstack/project-config/+/791967
Change-Id: Iebdd339efcc76f00dabdc406c2cc4392bfb4f7ac

reference/legacy.yaml

@@ -406,6 +406,10 @@ ironic:
       retired-on: 2016-11-28
       repos:
         - openstack/python-wsmanclient
+    sushy-cli:
+      retired-on: 2021-05-20
+      repos:
+        - openstack/sushy-cli
 karbor:
   retired-on: 2020-12-14
   irc-channel: openstack-karbor

reference/projects.yaml

@@ -643,9 +643,6 @@ ironic:
     sushy:
       repos:
         - openstack/sushy
-    sushy-cli:
-      repos:
-        - openstack/sushy-cli
     sushy-tools:
       repos:
         - openstack/sushy-tools