Revert "Postgres: Switch the datasource plugin from lib/pq to pgx (#103961)" (#106270)

This reverts commit 1e383b0c1e.

pkg/services/featuremgmt/registry.go

@@ -1689,12 +1689,6 @@ var (
 			Owner:        grafanaObservabilityTracesAndProfilingSquad,
 			FrontendOnly: true,
 		},
-		{
-			Name:        "postgresDSUsePGX",
-			Description: "Enables using PGX instead of libpq for PostgreSQL datasource",
-			Stage:       FeatureStageExperimental,
-			Owner:       grafanaOSSBigTent,
-		},
 		{
 			Name:         "pluginsAutoUpdate",
 			Description:  "Enables auto-updating of users installed plugins",

pkg/services/featuremgmt/toggles_gen.csv

@@ -221,7 +221,6 @@ localizationForPlugins,experimental,@grafana/plugins-platform-backend,false,fals
 unifiedNavbars,GA,@grafana/plugins-platform-backend,false,false,true
 logsPanelControls,preview,@grafana/observability-logs,false,false,true
 metricsFromProfiles,experimental,@grafana/observability-traces-and-profiling,false,false,true
-postgresDSUsePGX,experimental,@grafana/oss-big-tent,false,false,false
 pluginsAutoUpdate,experimental,@grafana/plugins-platform-backend,false,false,false
 multiTenantFrontend,experimental,@grafana/grafana-frontend-platform,false,false,false
 alertingListViewV2PreviewToggle,privatePreview,@grafana/alerting-squad,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -895,10 +895,6 @@ const (
 	// Enables creating metrics from profiles and storing them as recording rules
 	FlagMetricsFromProfiles = "metricsFromProfiles"
 
-	// FlagPostgresDSUsePGX
-	// Enables using PGX instead of libpq for PostgreSQL datasource
-	FlagPostgresDSUsePGX = "postgresDSUsePGX"
-
 	// FlagPluginsAutoUpdate
 	// Enables auto-updating of users installed plugins
 	FlagPluginsAutoUpdate = "pluginsAutoUpdate"

pkg/services/featuremgmt/toggles_gen.json

@@ -2574,18 +2574,6 @@
         "expression": "false"
       }
     },
-    {
-      "metadata": {
-        "name": "postgresDSUsePGX",
-        "resourceVersion": "1745320933872",
-        "creationTimestamp": "2025-04-22T11:22:13Z"
-      },
-      "spec": {
-        "description": "Enables using PGX instead of libpq for PostgreSQL datasource",
-        "stage": "experimental",
-        "codeowner": "@grafana/oss-big-tent"
-      }
-    },
     {
       "metadata": {
         "name": "preinstallAutoUpdate",

pkg/services/pluginsintegration/plugins_integration_test.go

@@ -85,7 +85,7 @@ func TestIntegrationPluginManager(t *testing.T) {
 	pr := prometheus.ProvideService(hcp)
 	tmpo := tempo.ProvideService(hcp)
 	td := testdatasource.ProvideService()
-	pg := postgres.ProvideService(features)
+	pg := postgres.ProvideService(cfg)
 	my := mysql.ProvideService()
 	ms := mssql.ProvideService(cfg)
 	db := db.InitTestDB(t, sqlstore.InitTestDBOpt{Cfg: cfg})