Enable grouped notifications unconditionally (#31929)

app/javascript/mastodon/selectors/settings.ts

@@ -1,4 +1,3 @@
-import { forceGroupedNotifications } from 'mastodon/initial_state';
 import type { RootState } from 'mastodon/store';
 
 /* eslint-disable @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access */
@@ -26,10 +25,6 @@ export const selectSettingsNotificationsQuickFilterAdvanced = (
 ) =>
   state.settings.getIn(['notifications', 'quickFilter', 'advanced']) as boolean;
 
-export const selectUseGroupedNotifications = (state: RootState) =>
-  forceGroupedNotifications ||
-  (state.settings.getIn(['notifications', 'groupingBeta']) as boolean);
-
 export const selectSettingsNotificationsShowUnread = (state: RootState) =>
   state.settings.getIn(['notifications', 'showUnread']) as boolean;