Remove Rocky 9 molecule testing

With landing CentOS Stream 10 molecule test, we can remove
Rocky 9, as it not going to be supported for 2025.2 anyway.

Change-Id: Icbc26b92a434f4d88816da32fe7350fb35274232

zuul.d/jobs.yaml

@@ -609,12 +609,3 @@
       tox_environment:
         DOCKER_REGISTRY: quay.io/gotmax23
         DOCKER_IMAGE_TAG: debian-systemd:bookworm
-
-# rocky linux 9
-- job:
-    name: openstack-ansible-tox-molecule-rockylinux-9
-    parent: openstack-ansible-tox-molecule
-    vars:
-      tox_environment:
-        DOCKER_REGISTRY: quay.io/rockylinux
-        DOCKER_IMAGE_TAG: rockylinux:9-ubi-init

zuul.d/project-templates.yaml

@@ -251,13 +251,11 @@
     check:
       jobs:
         - openstack-ansible-tox-molecule-debian-bookworm
-        - openstack-ansible-tox-molecule-rockylinux-9
         - openstack-ansible-tox-molecule-ubuntu-noble
         - openstack-ansible-tox-molecule-centos-10-stream
     gate:
       jobs:
         - openstack-ansible-tox-molecule-debian-bookworm
-        - openstack-ansible-tox-molecule-rockylinux-9
         - openstack-ansible-tox-molecule-ubuntu-noble
         - openstack-ansible-tox-molecule-centos-10-stream