MK8S-25: Revert installed.sls to original state

Revert all changes to installed.sls as they are not needed. The nginx
location directive approach doesn't require any changes to this file.

Author: rdebay-scality

salt/metalk8s/repo/installed.sls

@@ -97,8 +97,8 @@ Ensure repositories container is up:
 
 Wait for Repositories container to answer:
   http.wait_for_successful_query:
-   - name: http://{{ grains.metalk8s.control_plane_ip }}:{{ repo.port }}/{{ saltenv }}/
+   - name: http://{{ grains.metalk8s.control_plane_ip }}:{{
+     repo.port }}/{{ saltenv }}/
    - status: 200
-   - request_interval: 1
    - require:
-      - module: Ensure repositories container is up
+     - module: Ensure repositories container is up