CI: Drop apparmor installation

Depends-On: https://review.opendev.org/c/openstack/ansible-collection-kolla/+/872590
Change-Id: Ia8283f28147fbbd2d24028d01e021f95598b86fb

tests/pre.yml

@@ -55,14 +55,6 @@
         name: lvm2
       when: scenario in ['cephadm', 'zun', 'swift']
 
-    # TODO(mnasiadka): Remove this once ansible-collection-kolla
-    # installs apparmor
-    - name: Install apparmor on Debian/Ubuntu
-      become: true
-      package:
-        name: apparmor
-      when: ansible_os_family == 'Debian'
-
     - name: Ensure /tmp/logs/ dir
       file:
         path: "{{ logs_dir }}"