Remove Karbor projects from infra

As announced on the openstack-discuss ML[1], Karbor is retiring
this cycle (Wallaby).

This commit retires this repository as per the process defined in
the project-guide[2].

Thank you to all the contributors of Karbor for your hard work!

[1] http://lists.openstack.org/pipermail/openstack-discuss/2020-November/018643.html
[2] https://docs.openstack.org/project-team-guide/repository.html#retiring-a-repository

Depends-On: https://review.opendev.org/c/openstack/karbor/+/767032
Depends-On: https://review.opendev.org/c/openstack/karbor-dashboard/+/767034
Depends-On: https://review.opendev.org/c/openstack/python-karborclient/+/767033
Change-Id: I77a3daa1a9aa6146d6ff3c4f2f1dd4716e01ff56

gerritbot/channels.yaml

@@ -781,17 +781,6 @@ openstack-jjb:
     - master
     - stable/1.6
 
-openstack-karbor:
-  events:
-    - patchset-created
-    - change-merged
-  projects:
-    - openstack/karbor
-    - openstack/karbor-dashboard
-    - openstack/python-karborclient
-  branches:
-    - master
-
 openstack-keystone:
   events:
     - change-merged

zuul.d/projects.yaml

@@ -2773,18 +2773,6 @@
       - nodejs4-publish-to-npm
       - official-openstack-repo-jobs
 
-- project:
-    name: openstack/karbor
-    templates:
-      - official-openstack-repo-jobs
-      - noop-jobs
-
-- project:
-    name: openstack/karbor-dashboard
-    templates:
-      - official-openstack-repo-jobs
-      - noop-jobs
-
 - project:
     name: openstack/karma-subunit-reporter
     templates:
@@ -4955,12 +4943,6 @@
       - official-openstack-repo-jobs
       - publish-to-pypi
 
-- project:
-    name: openstack/python-karborclient
-    templates:
-      - official-openstack-repo-jobs
-      - noop-jobs
-
 - project:
     name: openstack/python-keystoneclient
     templates:

zuul/main.yaml

@@ -512,8 +512,6 @@
           - openstack/ironic-tempest-plugin
           - openstack/ironic-ui
           - openstack/js-openstack-lib
-          - openstack/karbor
-          - openstack/karbor-dashboard
           - openstack/karma-subunit-reporter
           - openstack/kayobe
           - openstack/kayobe-config
@@ -814,7 +812,6 @@
           - openstack/python-heatclient
           - openstack/python-ironic-inspector-client
           - openstack/python-ironicclient
-          - openstack/python-karborclient
           - openstack/python-keystoneclient
           - openstack/python-magnumclient
           - openstack/python-manilaclient