Loki: Remove lokiQueryHints feature toggle (#106620)

* Loki: Remove lokiQueryHints feature toggle

* Remove unused imports

* Fix tests

pkg/services/featuremgmt/registry.go

@@ -698,14 +698,11 @@ var (
 			Owner:        grafanaDatavizSquad,
 		},
 		{
-			// this is mainly used as a way to quickly disable query hints as a safeguard for our infrastructure
-			Name:           "lokiQueryHints",
-			Description:    "Enables query hints for Loki",
-			Stage:          FeatureStageGeneralAvailability,
-			FrontendOnly:   true,
-			Expression:     "true",
-			Owner:          grafanaObservabilityLogsSquad,
-			AllowSelfServe: false,
+			Name:         "regressionTransformation",
+			Description:  "Enables regression analysis transformation",
+			Stage:        FeatureStagePublicPreview,
+			FrontendOnly: true,
+			Owner:        grafanaDatavizSquad,
 		},
 		{
 			Name:              "kubernetesFeatureToggles",

pkg/services/featuremgmt/toggles_gen.csv

@@ -92,7 +92,7 @@ logsInfiniteScrolling,GA,@grafana/observability-logs,false,false,true
 logRowsPopoverMenu,GA,@grafana/observability-logs,false,false,true
 pluginsSkipHostEnvVars,experimental,@grafana/plugins-platform-backend,false,false,false
 tableSharedCrosshair,experimental,@grafana/dataviz-squad,false,false,true
-lokiQueryHints,GA,@grafana/observability-logs,false,false,true
+regressionTransformation,preview,@grafana/dataviz-squad,false,false,true
 kubernetesFeatureToggles,experimental,@grafana/grafana-operator-experience-squad,false,false,true
 cloudRBACRoles,preview,@grafana/identity-access-team,false,true,false
 alertingQueryOptimization,GA,@grafana/alerting-squad,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -379,9 +379,9 @@ const (
 	// Enables shared crosshair in table panel
 	FlagTableSharedCrosshair = "tableSharedCrosshair"
 
-	// FlagLokiQueryHints
-	// Enables query hints for Loki
-	FlagLokiQueryHints = "lokiQueryHints"
+	// FlagRegressionTransformation
+	// Enables regression analysis transformation
+	FlagRegressionTransformation = "regressionTransformation"
 
 	// FlagKubernetesFeatureToggles
 	// Use the kubernetes API for feature toggle management in the frontend

pkg/services/featuremgmt/toggles_gen.json

@@ -1868,8 +1868,9 @@
     {
       "metadata": {
         "name": "lokiQueryHints",
-        "resourceVersion": "1750434297879",
-        "creationTimestamp": "2023-12-18T20:43:16Z"
+        "resourceVersion": "1743693517832",
+        "creationTimestamp": "2023-12-18T20:43:16Z",
+        "deletionTimestamp": "2025-06-12T12:14:47Z"
       },
       "spec": {
         "description": "Enables query hints for Loki",