Remove obsolete dashboard output

Author: Aaron Lane

examples/regional_private_node_pool_oauth_scopes/README.md

@@ -18,7 +18,6 @@ This example illustrates how to create a private cluster with node pool specific
 | endpoint | Cluster endpoint |
 | horizontal\_pod\_autoscaling\_enabled | Whether horizontal pod autoscaling enabled |
 | http\_load\_balancing\_enabled | Whether http load balancing enabled |
-| kubernetes\_dashboard\_enabled | Whether kubernetes dashboard enabled |
 | location | Cluster location (region if regional cluster, zone if zonal cluster) |
 | logging\_service | Logging service used |
 | master\_authorized\_networks\_config | Networks from which access to master is permitted |

examples/regional_private_node_pool_oauth_scopes/outputs.tf

@@ -91,11 +91,6 @@ output "horizontal_pod_autoscaling_enabled" {
   value       = module.gke.horizontal_pod_autoscaling_enabled
 }
 
-output "kubernetes_dashboard_enabled" {
-  description = "Whether kubernetes dashboard enabled"
-  value       = module.gke.kubernetes_dashboard_enabled
-}
-
 output "node_pools_names" {
   description = "List of node pools names"
   value       = module.gke.node_pools_names