CI: Remove Zun jobs

Following I6a2a4ffdcaf1c4fab1097e94d5f255ffb9a2947d

Change-Id: I3b32c15abd10b256f57e54a08f0b6e485ba2c123

Author: mnasiadka

.zuul.d/rocky.yaml

@@ -11,8 +11,6 @@
             files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
         - kolla-ansible-rocky9-upgrade-cephadm:
             files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
-        - kolla-ansible-rocky9-zun:
-            files: ^docker\/(base|cinder|etcd|iscsid|kuryr|openstack-base|zun)\/.*
         - kolla-ansible-rocky9-ironic:
             files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
         - kolla-ansible-rocky9-swift:

.zuul.d/ubuntu.yaml

@@ -11,8 +11,6 @@
             files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
         - kolla-ansible-ubuntu-upgrade-cephadm:
             files: ^docker\/(base|cinder|glance|mariadb|openstack-base|rabbitmq)\/.*
-        - kolla-ansible-ubuntu-zun:
-            files: ^docker\/(base|cinder|etcd|iscsid|kuryr|openstack-base|zun)\/.*
         - kolla-ansible-ubuntu-ironic:
             files: ^docker\/(base|dnsmasq|ironic|ironic-inspector|iscsid|openstack-base)\/.*
         - kolla-ansible-ubuntu-swift: