[gtk+] Drop the GdkScreen get_setting vfunc

[Matthias Clasen <matthiasc src gnome org>]

commit 378c7648ba582660b8d73236669cb6cadede3454
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Oct 30 16:53:17 2017 -0400

    Drop the GdkScreen get_setting vfunc
    
    It is unused.

 gdk/gdkscreenprivate.h |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)
---
diff --git a/gdk/gdkscreenprivate.h b/gdk/gdkscreenprivate.h
index dc2ace2..9f63c41 100644
--- a/gdk/gdkscreenprivate.h
+++ b/gdk/gdkscreenprivate.h
@@ -44,9 +44,6 @@ struct _GdkScreenClass
 
   GdkDisplay * (* get_display)           (GdkScreen *screen);
   GdkWindow *  (* get_root_window)       (GdkScreen *screen);
-  gboolean     (* get_setting)           (GdkScreen   *screen,
-                                          const gchar *name,
-                                          GValue      *value);
 
   /* Signals: */
   void (*monitors_changed) (GdkScreen *screen);
@@ -54,4 +51,4 @@ struct _GdkScreenClass
 
 G_END_DECLS
 
-#endif /* __GDK_SCREEN_PRIVATE_H__ */
+#endif