[gtk+] print backend: Remove an unneeded variable

[Matthias Clasen <matthiasc src gnome org>]

commit 9ebebd48b00092446cdbeee03b49f149725c9868
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 6 13:15:38 2015 -0400

    print backend: Remove an unneeded variable
    
    The G_DEFINE_TYPE macros automate the parent_class handling.

 gtk/gtkprintbackend.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)
---
diff --git a/gtk/gtkprintbackend.c b/gtk/gtkprintbackend.c
index 8ec6dbc..99250cc 100644
--- a/gtk/gtkprintbackend.c
+++ b/gtk/gtkprintbackend.c
@@ -68,8 +68,6 @@ enum
   PROP_STATUS
 };
 
-static GObjectClass *backend_parent_class;
-
 GQuark
 gtk_print_backend_error_quark (void)
 {
@@ -367,8 +365,6 @@ gtk_print_backend_class_init (GtkPrintBackendClass *class)
   GObjectClass *object_class;
   object_class = (GObjectClass *) class;
 
-  backend_parent_class = g_type_class_peek_parent (class);
-  
   object_class->dispose = gtk_print_backend_dispose;
   object_class->set_property = gtk_print_backend_set_property;
   object_class->get_property = gtk_print_backend_get_property;
@@ -473,7 +469,7 @@ gtk_print_backend_dispose (GObject *object)
       priv->printers = NULL;
     }
 
-  backend_parent_class->dispose (object);
+  G_OBJECT_CLASS (_gtk_print_backend_module_parent_class)->dispose (object);
 }