remove commented out title bar

Author: DarthGandalf

src/window.blp

@@ -4,16 +4,6 @@ template $ShutterRustWindow: ApplicationWindow {
   default-width: 600;
   default-height: 300;
 
-  /*titlebar: HeaderBar header_bar {
-    [end]
-    MenuButton {
-      primary: true;
-      icon-name: "open-menu-symbolic";
-      tooltip-text: _("Menu");
-      menu-model: primary_menu;
-    }
-  };*/
-
   child: Label label {
     label: "Hello, World!";