[gtk+] Remove an unused variable

[Matthias Clasen <matthiasc src gnome org>]

commit f39a7ecd63be3e792ddb8f63267a2442bb23533f
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon May 23 14:17:13 2016 -0400

    Remove an unused variable

 gdk/gdkdisplay.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index 9e638dc..884e2db 100644
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -2692,7 +2692,6 @@ gdk_display_get_monitor_at_window (GdkDisplay *display,
   int n_monitors, i;
   int area = 0;
   GdkMonitor *best = NULL;
-  GdkWindowImplClass *impl_class;
   GdkDisplayClass *class;
 
   g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);