Dashboard: remove unused submenuEnabled property (#63289)

remove submenu property

public/app/features/dashboard/state/DashboardModel.ts

@@ -1045,15 +1045,9 @@ export class DashboardModel implements TimeModel {
 
     const navbarHeight = 55;
     const margin = 20;
-    const submenuHeight = 50;
 
     let visibleHeight = viewHeight - navbarHeight - margin;
 
-    // Remove submenu height if visible
-    if (this.meta.submenuEnabled && !kioskMode) {
-      visibleHeight -= submenuHeight;
-    }
-
     // add back navbar height
     if (kioskMode && kioskMode !== KioskMode.TV) {
       visibleHeight += navbarHeight;

public/app/types/dashboard.ts

@@ -23,7 +23,6 @@ export interface DashboardMeta {
   folderId?: number;
   folderUid?: string;
   canMakeEditable?: boolean;
-  submenuEnabled?: boolean;
   provisioned?: boolean;
   provisionedExternalId?: string;
   isStarred?: boolean;