Merge pull request #60097 from ousleyp/remove-old-update-note

[no jira][virt] Removing outdated note from update docs

Author: ousleyp

virt/upgrading-virt.adoc

@@ -13,16 +13,6 @@ Learn how Operator Lifecycle Manager (OLM) delivers z-stream and minor version u
 Updating to {VirtProductName} 4.13 from {VirtProductName} 4.12.2 is not supported.
 ====
 
-[NOTE]
-====
-* The Node Maintenance Operator (NMO) is no longer shipped with {VirtProductName}. You can *install the NMO* from the *OperatorHub* in the {product-title} web console, or by using the OpenShift CLI (`oc`). For more information on remediation, fencing, and maintaining nodes, see the link:https://access.redhat.com/documentation/en-us/workload_availability_for_red_hat_openshift/23.2/html-single/remediation_fencing_and_maintenance/index#about-remediation-fencing-maintenance[Workload Availability for Red Hat OpenShift] documentation.
-+
-You must perform one of the following tasks before updating to {VirtProductName} 4.11 from {VirtProductName} 4.10.2 and later releases:
-
-** Move all nodes out of maintenance mode.
-** Install the standalone NMO and replace the `nodemaintenances.nodemaintenance.kubevirt.io` custom resource (CR) with a `nodemaintenances.nodemaintenance.medik8s.io` CR.
-====
-
 // todo: uncomment when z-stream releases
 //include::modules/virt-rhel-9.adoc[leveloffset=+1]