Drop wheel publishing for centos-8-stream

centos-8-stream is EOL and the upstream repos have been cleaned, thus
the periodic build jobs are failing and we should drop then.

Actually cleaning up the related AFS volume should be done later, when
all other centos-8 jobs have been deleted.

Depends-On: https://review.opendev.org/c/openstack/project-config/+/922313
Depends-On: https://review.opendev.org/c/openstack/requirements/+/922457
Change-Id: Idc9c0f8880745060e598dcead399f049fa481cd4

zuul.d/jobs.yaml

@@ -1509,32 +1509,6 @@
       wheel-cache-centos-9-stream-arm64-python3:
         wheel_python: python3
 
-- job:
-    name: build-wheel-cache-centos-8-stream
-    parent: build-wheel-cache-base
-    description: |
-      Build CentOS 8 wheels for OpenStack CI mirrors.
-    nodeset:
-      nodes:
-        - name: wheel-cache-centos-8-stream-python3
-          label: centos-8-stream
-    host-vars:
-      wheel-cache-centos-8-stream-python3:
-        wheel_python: python3
-
-- job:
-    name: build-wheel-cache-centos-8-stream-arm64
-    parent: build-wheel-cache-base
-    description: |
-      Build CentOS 8 wheels for OpenStack CI mirrors.
-    nodeset:
-      nodes:
-        - name: wheel-cache-centos-8-stream-arm64-python3
-          label: centos-8-stream-arm64
-    host-vars:
-      wheel-cache-centos-8-stream-arm64-python3:
-        wheel_python: python3
-
 - job:
     name: build-wheel-cache-debian-bullseye
     parent: build-wheel-cache-base

zuul.d/project.yaml

@@ -13,10 +13,6 @@
         - openafs-rpm-package-build-centos-9-stream-arm64
         - openstack-infra-extra-integration-bionic
         - openstack-zuul-jobs-linters
-        - build-wheel-cache-centos-8-stream:
-            files:
-              - playbooks/wheel-cache
-              - roles/build-wheel-cache
         - build-wheel-cache-centos-9-stream:
             files:
               - playbooks/wheel-cache
@@ -39,10 +35,6 @@
               - roles/build-wheel-cache
     check-arm64:
       jobs:
-        - build-wheel-cache-centos-8-stream-arm64:
-            files:
-              - playbooks/wheel-cache
-              - roles/build-wheel-cache
         - build-wheel-cache-centos-9-stream-arm64:
             files:
               - playbooks/wheel-cache