CloudMonitor: Remove cloudMonitoringExperimentalUI feature flag (#55054)

* CloudMonitor: remove cloudMonitoringExperimentalUI

* fix: address typecheck errors

* fix: fix SLO import and width cleanup

* fix wrong metricType when switching datasources

* fix: remove legacy SLO and fix queryType check

pkg/services/featuremgmt/registry.go

@@ -232,12 +232,6 @@ var (
 			Description: "Continue to use the angular/flot based heatmap panel",
 			State:       FeatureStateStable,
 		},
-		{
-			Name:         "cloudMonitoringExperimentalUI",
-			Description:  "Use grafana-experimental UI in Cloud Monitoring",
-			State:        FeatureStateAlpha,
-			FrontendOnly: true,
-		},
 		{
 			Name:            "disableSecretsCompatibility",
 			Description:     "Disable duplicated secret storage in legacy tables",

pkg/services/featuremgmt/toggles_gen.go

@@ -171,10 +171,6 @@ const (
 	// Continue to use the angular/flot based heatmap panel
 	FlagUseLegacyHeatmapPanel = "useLegacyHeatmapPanel"
 
-	// FlagCloudMonitoringExperimentalUI
-	// Use grafana-experimental UI in Cloud Monitoring
-	FlagCloudMonitoringExperimentalUI = "cloudMonitoringExperimentalUI"
-
 	// FlagDisableSecretsCompatibility
 	// Disable duplicated secret storage in legacy tables
 	FlagDisableSecretsCompatibility = "disableSecretsCompatibility"