[gtk+] checkbutton: Remove unused vfunc

[Timm Bäder <baedert src gnome org>]

commit 1a0577b3f4a8d8567b8e59453b574073b01aba5a
Author: Timm Bäder <mail baedert org>
Date:   Fri Jan 27 11:16:03 2017 +0100

    checkbutton: Remove unused vfunc

 gtk/gtkcheckbutton.h |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkcheckbutton.h b/gtk/gtkcheckbutton.h
index 45aa847..416ee96 100644
--- a/gtk/gtkcheckbutton.h
+++ b/gtk/gtkcheckbutton.h
@@ -55,9 +55,6 @@ struct _GtkCheckButtonClass
 {
   GtkToggleButtonClass parent_class;
 
-  void (* draw_indicator) (GtkCheckButton *check_button,
-                          cairo_t        *cr);
-
   /* Padding for future expansion */
   void (*_gtk_reserved1) (void);
   void (*_gtk_reserved2) (void);