CORD-3221 remove view_url field from VTN service

Change-Id: Ibf9460ee15a23bcedd6eab07d784766ce30a5ac2
diff --git a/xos-services/vtn-service/templates/_tosca.tpl b/xos-services/vtn-service/templates/_tosca.tpl
index 32f765d..c7f25b1 100644
--- a/xos-services/vtn-service/templates/_tosca.tpl
+++ b/xos-services/vtn-service/templates/_tosca.tpl
@@ -33,7 +33,6 @@
       properties:
           name: vtn
           kind: platform
-          view_url: /admin/vtn/vtnservice/$id$/
           privateGatewayMac: 00:00:00:00:00:01
           localManagementIp: 172.27.0.1/24
           ovsdbPort: 6641