OCPBUGS-56952: Removed br-ex notes from networking DNS docs

Author: dfitzmau

modules/virt-example-nmstate-IP-management.adoc

@@ -312,9 +312,3 @@ routes:
 <1> The static IP address for the Ethernet interface.
 <2> The next hop address for the node traffic. This must be in the same subnet as the IP address set for the Ethernet interface.
 
-[IMPORTANT]
-====
-You cannot use the OVN-Kubernetes `br-ex` bridge as the next hop interface when configuring a static route unless you manually configured a customized `br-ex` bridge.
-
-For more information, see "Creating a manifest object that includes a customized br-ex bridge" in the _Deploying installer-provisioned clusters on bare metal_ document or the _Installing a user-provisioned cluster on bare metal_ document.
-====