OSDOCS-3364: Cleaning up updating repo

Author: sagidlow

_artifacts/toc.yml

@@ -309,8 +309,6 @@ main-menu:
     items:
       - name: Understanding the OpenShift Update Service
         path: updating/understanding-the-update-service.adoc
-      - name: Installing and configuring the OpenShift Update Service
-        path: updating/installing-update-service.adoc
       - name: Understanding upgrade channels and releases
         path: updating/understanding-upgrade-channels-release.adoc
       - name: Updating a cluster within a minor version using the web console

modules/update-oc-configmap-signature-verification.adoc

@@ -1,6 +1,5 @@
 // Module included in the following assemblies:
 //
-// * updating/updating-cluster.adoc
 // * updating/updating-cluster-within-minor.adoc
 
 ifeval::["{context}" == "updating-cluster-rhel-compute"]

modules/update-upgrading-web.adoc

@@ -2,7 +2,6 @@
 //
 // * updating/updating-cluster-within-minor.adoc
 // * updating/updating-cluster-cli.adoc
-// * updating/updating-cluster.adoc
 
 :_content-type: CONCEPT
 [id="update-single-node-openshift_{context}"]