Update to remove default value for enum RouteType (#16343)

Author: AriZavala2

specification/communication/data-plane/NetworkTraversal/preview/2021-10-08-preview/CommunicationNetworkTraversal.json

@@ -65,7 +65,6 @@
         "routeType": {
           "description": "The routing methodology to where the ICE server will be located from the client.",
           "type": "string",
-          "default": "any",
           "enum": [
             "any",
             "nearest"