[gnome-desktop] tests: Remove unused gdkx.h include

[Bastien Nocera <hadess src gnome org>]

commit d36987ad01ee4c7201751d8a007056fc6df1a08d
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Sep 30 10:52:50 2015 +0200

    tests: Remove unused gdkx.h include

 libgnome-desktop/gnome-rr-debug.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/libgnome-desktop/gnome-rr-debug.c b/libgnome-desktop/gnome-rr-debug.c
index 16d841e..d7cdc25 100644
--- a/libgnome-desktop/gnome-rr-debug.c
+++ b/libgnome-desktop/gnome-rr-debug.c
@@ -20,7 +20,6 @@
 
 #define GNOME_DESKTOP_USE_UNSTABLE_API
 
-#include <gdk/gdkx.h>
 #include <glib.h>
 #include <gtk/gtk.h>
 #include <libgnome-desktop/gnome-rr.h>