chore: remove deprecated workload component to prevent flakes (terraform-google-modules#1406)

Author: bharathkkb

examples/simple_regional_beta/main.tf

@@ -52,7 +52,7 @@ module "gke" {
   enable_identity_service       = true
   release_channel               = "REGULAR"
   logging_enabled_components    = ["SYSTEM_COMPONENTS"]
-  monitoring_enabled_components = ["SYSTEM_COMPONENTS", "WORKLOADS"]
+  monitoring_enabled_components = ["SYSTEM_COMPONENTS"]
 
   # Disable workload identity
   identity_namespace = null

test/integration/beta_cluster/controls/gcloud.rb

@@ -112,7 +112,6 @@
 
       it "has the expected monitoring config" do
         expect(data['monitoringConfig']['componentConfig']['enableComponents']).to match_array([
-          "WORKLOADS",
           "SYSTEM_COMPONENTS"
         ])
       end