[gtk+] testgtk: Remove pointless code

[Matthias Clasen <matthiasc src gnome org>]

commit ccfacb383ca39d47b70427ffa4b268a5b8baed29
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jul 17 19:54:09 2015 -0400

    testgtk: Remove pointless code
    
    The display is getting overwritten immediately. Pointed out by
    coverity.

 tests/testgtk.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/testgtk.c b/tests/testgtk.c
index f7aee23..eeb8c17 100644
--- a/tests/testgtk.c
+++ b/tests/testgtk.c
@@ -5630,7 +5630,7 @@ static void
 screen_display_check (GtkWidget *widget, ScreenDisplaySelection *data)
 {
   const gchar *display_name;
-  GdkDisplay *display = gtk_widget_get_display (widget);
+  GdkDisplay *display;
   GtkWidget *dialog;
   GdkScreen *new_screen = NULL;
   GdkScreen *current_screen = gtk_widget_get_screen (widget);