remove route server

Author: duongau

articles/index.yml

@@ -1311,13 +1311,6 @@ productDirectory:
         - networking
       url: load-balancer/index.yml
     # Card
-    - title: Azure Route Server
-      summary: Simplify operations management of your network appliances
-      imageSrc: ./media/index/azure-route-server.svg
-      azureCategories:
-        - networking
-      url: route-server/index.yml
-    # Card
     - title: Virtual Network
       summary: Provision private networks, optionally connect to on-premises datacenters
       imageSrc: ./media/index/virtual-networks.svg