Remove airship/utils from infrastructure

This removes the retired airship/utils project from
OpenStack Infrastructure.

Depends-On: https://review.opendev.org/#/c/670923/
Depends-On: https://review.opendev.org/#/c/671042/
Change-Id: I884f2a4f966412e50ff74401f1386b2d431ecc9a

gerrit/projects.yaml

@@ -108,9 +108,9 @@
   groups:
     - airship
 - project: airship/utils
-  description: Collection of common tools for the Airship projects
+  description: RETIRED, Collection of common tools for the Airship projects
   use-storyboard: true
-  acl-config: /home/gerrit2/acls/airship/airship.config
+  acl-config: /home/gerrit2/acls/openstack/retired.config
   groups:
     - airship
 - project: inaugust/inaugust.com

zuul.d/projects.yaml

@@ -29,11 +29,6 @@
     templates:
       - noop-jobs
 
-- project:
-    name: airship/utils
-    templates:
-      - noop-jobs
-
 - project:
     name: ansible/ansible
     default-branch: devel

zuul/main.yaml

@@ -104,7 +104,6 @@
           - airship/spyglass-plugin-xls
           - airship/tempest-plugin
           - airship/treasuremap
-          - airship/utils
           - jjb/jenkins-job-builder
           - jjb/python-jenkins
           - limestone/ci-cloud-config