[gtk+] wayland: Remove old, outdated comment

[Jasper St. Pierre <jstpierre src gnome org>]

commit 7d675309825e43a9c60e6b6af0873d70fd79ec23
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Thu Feb 27 17:00:46 2014 -0500

    wayland: Remove old, outdated comment

 gdk/wayland/gdkwindow-wayland.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)
---
diff --git a/gdk/wayland/gdkwindow-wayland.c b/gdk/wayland/gdkwindow-wayland.c
index 5be6df4..0f0d581 100644
--- a/gdk/wayland/gdkwindow-wayland.c
+++ b/gdk/wayland/gdkwindow-wayland.c
@@ -1061,10 +1061,6 @@ xdg_popup_done (void             *data,
 {
   GdkWindow *window = GDK_WINDOW (data);
 
-  /* When the popup is complete hide the window - this really relies on the
-   * fix in https://bugzilla.gnome.org/show_bug.cgi?id=670881 to work
-   * effectively.
-   */
   gdk_window_hide (window);
 }