Revert: DataSource: Support config CRUD from apiservers (#106996) (#110342)

Revert "DataSource: Support config CRUD from apiservers (#106996)"

This reverts commit eda94a6434.

pkg/services/featuremgmt/registry.go

@@ -499,13 +499,6 @@ var (
 			Owner:           grafanaDatasourcesCoreServicesSquad,
 			RequiresRestart: true, // Adds a route at startup
 		},
-		{
-			Name:            "queryServiceWithConnections",
-			Description:     "Adds datasource connections to the query service",
-			Stage:           FeatureStageExperimental,
-			Owner:           grafanaDatasourcesCoreServicesSquad,
-			RequiresRestart: true, // Adds a route at startup
-		},
 		{
 			Name:            "queryServiceRewrite",
 			Description:     "Rewrite requests targeting /ds/query to the query service",

pkg/services/featuremgmt/toggles_gen.csv

@@ -65,7 +65,6 @@ dashboardSchemaValidationLogging,experimental,@grafana/grafana-app-platform-squa
 scanRowInvalidDashboardParseFallbackEnabled,experimental,@grafana/search-and-storage,false,false,false
 datasourceQueryTypes,experimental,@grafana/grafana-app-platform-squad,false,true,false
 queryService,experimental,@grafana/grafana-datasources-core-services,false,true,false
-queryServiceWithConnections,experimental,@grafana/grafana-datasources-core-services,false,true,false
 queryServiceRewrite,experimental,@grafana/grafana-datasources-core-services,false,true,false
 queryServiceFromUI,experimental,@grafana/grafana-datasources-core-services,false,false,true
 queryServiceFromExplore,experimental,@grafana/grafana-datasources-core-services,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -271,10 +271,6 @@ const (
 	// Register /apis/query.grafana.app/ -- will eventually replace /api/ds/query
 	FlagQueryService = "queryService"
 
-	// FlagQueryServiceWithConnections
-	// Adds datasource connections to the query service
-	FlagQueryServiceWithConnections = "queryServiceWithConnections"
-
 	// FlagQueryServiceRewrite
 	// Rewrite requests targeting /ds/query to the query service
 	FlagQueryServiceRewrite = "queryServiceRewrite"

pkg/services/featuremgmt/toggles_gen.json

@@ -2765,19 +2765,6 @@
         "requiresRestart": true
       }
     },
-    {
-      "metadata": {
-        "name": "queryServiceWithConnections",
-        "resourceVersion": "1756367172351",
-        "creationTimestamp": "2025-08-28T07:46:12Z"
-      },
-      "spec": {
-        "description": "Adds datasource connections to the query service",
-        "stage": "experimental",
-        "codeowner": "@grafana/grafana-datasources-core-services",
-        "requiresRestart": true
-      }
-    },
     {
       "metadata": {
         "name": "recordedQueriesMulti",