Update install service.

@@ -124,6 +124,7 @@ public class ThingsboardInstallService {
                         systemDataLoaderService.deleteSystemWidgetBundle("maps_v2");
                         systemDataLoaderService.deleteSystemWidgetBundle("gateway_widgets");
                         systemDataLoaderService.deleteSystemWidgetBundle("input_widgets");
+                        systemDataLoaderService.deleteSystemWidgetBundle("date");
 
                         systemDataLoaderService.loadSystemWidgets();
                         break;