all: remove traditional i3 titlebars, add corner rounding

src/ifs/wl_seat.rs

@@ -1320,6 +1320,7 @@ impl WlSeatGlobal {
             .start_drag(self, origin, source, icon, serial)
     }
 
+    #[allow(dead_code)]
     pub fn start_tile_drag(self: &Rc<Self>, tl: &Rc<dyn ToplevelNode>) {
         if self.state.ui_drag_enabled.get() {
             self.pointer_owner.start_tile_drag(self, tl);