[gnome-control-center] network: Remove unused callback type

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit bf43c64b6394019e5dce798122103531c2090b0f
Author: Robert Ancell <robert ancell canonical com>
Date:   Thu Oct 3 20:44:01 2019 +1300

    network: Remove unused callback type

 panels/network/wireless-security/wireless-security.h | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/panels/network/wireless-security/wireless-security.h 
b/panels/network/wireless-security/wireless-security.h
index bf468a5b9..d1baa3de5 100644
--- a/panels/network/wireless-security/wireless-security.h
+++ b/panels/network/wireless-security/wireless-security.h
@@ -36,7 +36,6 @@ typedef void (*WSFillConnectionFunc) (WirelessSecurity *sec, NMConnection *conne
 typedef void (*WSUpdateSecretsFunc)  (WirelessSecurity *sec, NMConnection *connection);
 typedef void (*WSDestroyFunc)        (WirelessSecurity *sec);
 typedef gboolean (*WSValidateFunc)   (WirelessSecurity *sec, GError **error);
-typedef GtkWidget * (*WSNagUserFunc) (WirelessSecurity *sec);
 
 struct _WirelessSecurity {
        guint32 refcount;