Revert "Alerting: New feature toggle for enabling standalone alerts (#25984)" (#27531)

This reverts commit 20b603ee1a.

docs/sources/administration/configuration.md

@@ -1391,7 +1391,7 @@ For more information about Grafana Enterprise, refer to [Grafana Enterprise]({{<
 
 ### enable
 
-Keys of alpha features to enable, separated by space. Available alpha features are: `transformations`, `standaloneAlerts`
+Keys of alpha features to enable, separated by space. Available alpha features are: `transformations`
 
 ## [date_formats]
 

packages/grafana-data/src/types/config.ts

@@ -42,7 +42,6 @@ export interface FeatureToggles {
   meta: boolean;
   datasourceInsights: boolean;
   reportGrid: boolean;
-  standaloneAlerts: boolean;
 }
 
 /**

packages/grafana-runtime/src/config.ts

@@ -56,7 +56,6 @@ export class GrafanaBootConfig implements GrafanaConfig {
     meta: false,
     datasourceInsights: false,
     reportGrid: false,
-    standaloneAlerts: false,
   };
   licenseInfo: LicenseInfo = {} as LicenseInfo;
   rendererAvailable = false;

pkg/setting/setting.go

@@ -315,11 +315,6 @@ func (c Cfg) IsExpressionsEnabled() bool {
 	return c.FeatureToggles["expressions"]
 }
 
-// IsStandaloneAlertsEnabled returns whether the standalone alerts feature is enabled.
-func (c Cfg) IsStandaloneAlertsEnabled() bool {
-	return c.FeatureToggles["standaloneAlerts"]
-}
-
 // IsLiveEnabled returns if grafana live should be enabled
 func (c Cfg) IsLiveEnabled() bool {
 	return c.FeatureToggles["live"]