[gtk+] Remove leftover code

[Matthias Clasen <matthiasc src gnome org>]

commit 08bd079938b0bdf4c334f659fa4b2f92cec72c75
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 1 17:04:33 2017 -0400

    Remove leftover code
    
    Nothing is setting this object data anymore, so no point
    in cleaning it up.

 gdk/gdkwindow.c |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index a33efaa..e8c4237 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -238,8 +238,6 @@ gdk_window_init (GdkWindow *window)
                                                  NULL, g_object_unref);
 }
 
-static GQuark quark_pointer_window = 0;
-
 static void
 gdk_window_class_init (GdkWindowClass *klass)
 {
@@ -249,9 +247,6 @@ gdk_window_class_init (GdkWindowClass *klass)
   object_class->set_property = gdk_window_set_property;
   object_class->get_property = gdk_window_get_property;
 
-  quark_pointer_window = g_quark_from_static_string ("gtk-pointer-window");
-
-
   /* Properties */
 
   /**
@@ -1271,9 +1266,6 @@ _gdk_window_destroy_hierarchy (GdkWindow *window,
 
   display = gdk_window_get_display (window);
   screen = gdk_display_get_default_screen (display);
-  temp_window = g_object_get_qdata (G_OBJECT (screen), quark_pointer_window);
-  if (temp_window == window)
-    g_object_set_qdata (G_OBJECT (screen), quark_pointer_window, NULL);
 
   switch (window->window_type)
     {