don't disable mouse coalescing on macos

src/macos/view.rs

@@ -292,8 +292,6 @@ extern "C" fn view_will_move_to_window(this: &Object, _self: Sel, new_window: id
         let tracking_areas: *mut Object = msg_send![this, trackingAreas];
         let tracking_area_count = NSArray::count(tracking_areas);
 
-        let _: () = msg_send![class!(NSEvent), setMouseCoalescingEnabled: NO];
-
         if new_window == nil {
             if tracking_area_count != 0 {
                 let tracking_area = NSArray::objectAtIndex(tracking_areas, 0);