[glade] gladeui: remove unused type_func variable

[Alberto Fanjul <albfan src gnome org>]

commit a554b9602d8dc356e96d6f14ac4deba2daba4456
Author: Victor Toso <me victortoso com>
Date:   Wed Nov 6 09:57:13 2019 +0100

    gladeui: remove unused type_func variable
    
    Added in a4cd9074b6e59

 gladeui/glade-widget.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/gladeui/glade-widget.c b/gladeui/glade-widget.c
index af6893ed..f2a77a57 100644
--- a/gladeui/glade-widget.c
+++ b/gladeui/glade-widget.c
@@ -4400,7 +4400,6 @@ glade_widget_write (GladeWidget     *widget,
     }
   else
     {
-      const gchar *type_func = NULL;
       widget_node = glade_xml_node_new (context, GLADE_XML_TAG_WIDGET);
       glade_xml_node_set_property_string (widget_node,
                                           GLADE_XML_TAG_CLASS,