Move links in Prerequisites to Additional resources

Author: GitHub Actions

modules/installation/proc-deploy-rhdh-instance-gke.adoc

@@ -190,13 +190,6 @@ spec:
 
 // Wait until the DNS name is responsive, indicating that your {product-short} instance is ready for use.
 
-[role="_additional-resources"]
-.Additional resources
-
-* link:https://access.redhat.com/RegistryAuthentication[{company-name} Container Registry Authentication]
-* link:https://kubernetes.io/docs/tasks/tools/#kubectl[Installing `kubetl]`
-* link:https://cloud.google.com/vpc/docs/reserve-static-external-ip-address#reserve_new_static[Reserving a new static external IP address]
-
 .Additional information
 For more information on setting up {gke-short} using Ingress with TLS, see https://github.com/GoogleCloudPlatform/gke-networking-recipes/tree/main/ingress/single-cluster/ingress-https[Secure GKE Ingress].