Dashboards: Remove no-datasource screen (#68574)

* Dashboards: Remove non-ds configured landing page

* Remove `datasourceOnboarding` feature toggle

pkg/services/featuremgmt/registry.go

@@ -277,12 +277,6 @@ var (
 			State:       FeatureStateAlpha,
 			Owner:       grafanaObservabilityLogsSquad,
 		},
-		{
-			Name:        "datasourceOnboarding",
-			Description: "Enable data source onboarding page",
-			State:       FeatureStateAlpha,
-			Owner:       grafanaDashboardsSquad,
-		},
 		{
 			Name:         "emptyDashboardPage",
 			Description:  "Enable the redesigned user interface of a dashboard page that includes no panels",

pkg/services/featuremgmt/toggles_gen.csv

@@ -40,7 +40,6 @@ accessControlOnCall,beta,@grafana/grafana-authnz-team,false,false,false,false
 nestedFolders,beta,@grafana/backend-platform,false,false,false,false
 accessTokenExpirationCheck,stable,@grafana/grafana-authnz-team,false,false,false,false
 showTraceId,alpha,@grafana/observability-logs,false,false,false,false
-datasourceOnboarding,alpha,@grafana/dashboards-squad,false,false,false,false
 emptyDashboardPage,stable,@grafana/dashboards-squad,false,false,false,true
 authnService,alpha,@grafana/grafana-authnz-team,false,false,false,false
 disablePrometheusExemplarSampling,stable,@grafana/observability-metrics,false,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -171,10 +171,6 @@ const (
 	// Show trace ids for requests
 	FlagShowTraceId = "showTraceId"
 
-	// FlagDatasourceOnboarding
-	// Enable data source onboarding page
-	FlagDatasourceOnboarding = "datasourceOnboarding"
-
 	// FlagEmptyDashboardPage
 	// Enable the redesigned user interface of a dashboard page that includes no panels
 	FlagEmptyDashboardPage = "emptyDashboardPage"