Prometheus: Remove prometheusResourceBrowserCache feature toggle (#76172)

* Remove prometheusResourceBrowserCache feature toggle

* Remove prometheusResourceBrowserCache feature toggle from prometheus datasource

* Update tests

pkg/services/featuremgmt/registry.go

@@ -331,14 +331,6 @@ var (
 			FrontendOnly: true,
 			Owner:        appO11ySquad,
 		},
-		{
-			Name:         "prometheusResourceBrowserCache",
-			Description:  "Displays browser caching options in Prometheus data source configuration",
-			Stage:        FeatureStageGeneralAvailability,
-			FrontendOnly: true,
-			Expression:   "true", // turned on by default
-			Owner:        grafanaObservabilityMetricsSquad,
-		},
 		{
 			Name:         "influxdbBackendMigration",
 			Description:  "Query InfluxDB InfluxQL without the proxy",

pkg/services/featuremgmt/toggles_gen.csv

@@ -47,7 +47,6 @@ individualCookiePreferences,experimental,@grafana/backend-platform,false,false,f
 gcomOnlyExternalOrgRoleSync,GA,@grafana/grafana-authnz-team,false,false,false,false
 prometheusMetricEncyclopedia,GA,@grafana/observability-metrics,false,false,false,true
 timeSeriesTable,experimental,@grafana/app-o11y,false,false,false,true
-prometheusResourceBrowserCache,GA,@grafana/observability-metrics,false,false,false,true
 influxdbBackendMigration,preview,@grafana/observability-metrics,false,false,false,true
 clientTokenRotation,experimental,@grafana/grafana-authnz-team,false,false,false,false
 prometheusDataplane,GA,@grafana/observability-metrics,false,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -199,10 +199,6 @@ const (
 	// Enable time series table transformer & sparkline cell type
 	FlagTimeSeriesTable = "timeSeriesTable"
 
-	// FlagPrometheusResourceBrowserCache
-	// Displays browser caching options in Prometheus data source configuration
-	FlagPrometheusResourceBrowserCache = "prometheusResourceBrowserCache"
-
 	// FlagInfluxdbBackendMigration
 	// Query InfluxDB InfluxQL without the proxy
 	FlagInfluxdbBackendMigration = "influxdbBackendMigration"