example project updates

example/lib/menus/asset_submenu.dart

@@ -263,6 +263,11 @@ class _AssetSubmenuState extends State<AssetSubmenu> {
                   .loadIbl('assets/default_env/default_env_ibl.ktx');
             },
             child: const Text('Load IBL')),
+        MenuItemButton(
+            onPressed: () {
+              widget.controller.removeIbl();
+            },
+            child: const Text('Remove IBL')),
         MenuItemButton(
             onPressed: () async {
               await Permission.microphone.request();