Remote Alertmanager: Remove code for remote only mode (#105184)

pkg/services/featuremgmt/registry.go

@@ -615,12 +615,6 @@ var (
 			Stage:       FeatureStageExperimental,
 			Owner:       grafanaAlertingSquad,
 		},
-		{
-			Name:        "alertmanagerRemoteOnly",
-			Description: "Disable the internal Alertmanager and only use the external one defined.",
-			Stage:       FeatureStageExperimental,
-			Owner:       grafanaAlertingSquad,
-		},
 		{
 			Name:            "annotationPermissionUpdate",
 			Description:     "Change the way annotation permissions work by scoping them to folders and dashboards.",

pkg/services/featuremgmt/toggles_gen.csv

@@ -81,7 +81,6 @@ prometheusCodeModeMetricNamesSearch,experimental,@grafana/oss-big-tent,false,fal
 addFieldFromCalculationStatFunctions,GA,@grafana/dataviz-squad,false,false,true
 alertmanagerRemoteSecondary,experimental,@grafana/alerting-squad,false,false,false
 alertmanagerRemotePrimary,experimental,@grafana/alerting-squad,false,false,false
-alertmanagerRemoteOnly,experimental,@grafana/alerting-squad,false,false,false
 annotationPermissionUpdate,GA,@grafana/identity-access-team,false,false,false
 extractFieldsNameDeduplication,experimental,@grafana/dataviz-squad,false,false,true
 dashboardSceneForViewers,GA,@grafana/dashboards-squad,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -335,10 +335,6 @@ const (
 	// Enable Grafana to have a remote Alertmanager instance as the primary Alertmanager.
 	FlagAlertmanagerRemotePrimary = "alertmanagerRemotePrimary"
 
-	// FlagAlertmanagerRemoteOnly
-	// Disable the internal Alertmanager and only use the external one defined.
-	FlagAlertmanagerRemoteOnly = "alertmanagerRemoteOnly"
-
 	// FlagAnnotationPermissionUpdate
 	// Change the way annotation permissions work by scoping them to folders and dashboards.
 	FlagAnnotationPermissionUpdate = "annotationPermissionUpdate"

pkg/services/featuremgmt/toggles_gen.json

@@ -385,7 +385,8 @@
       "metadata": {
         "name": "alertmanagerRemoteOnly",
         "resourceVersion": "1743693517832",
-        "creationTimestamp": "2023-10-30T16:27:08Z"
+        "creationTimestamp": "2023-10-30T16:27:08Z",
+        "deletionTimestamp": "2025-05-09T12:58:01Z"
       },
       "spec": {
         "description": "Disable the internal Alertmanager and only use the external one defined.",