[krb5-auth-dialog] main-window: Drop gtk_builder_connect_signals

[Guido Günther <guidog src gnome org>]

commit 2498b5a6a725a1fb558fede829417e1f1550757f
Author: Guido Günther <agx sigxcpu org>
Date:   Mon Oct 17 10:21:04 2022 +0200

    main-window: Drop gtk_builder_connect_signals
    
    We don't have any signals to connect anymore but it's also not needed in
    GTK4.

 src/ka-main-window.c | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/src/ka-main-window.c b/src/ka-main-window.c
index 1ea70ee..db490c0 100644
--- a/src/ka-main-window.c
+++ b/src/ka-main-window.c
@@ -107,7 +107,6 @@ ka_main_window_create (KaApplet *applet)
     main_window =
         GTK_APPLICATION_WINDOW (gtk_builder_get_object (builder,
                                                         "krb5_main_window"));
-    gtk_builder_connect_signals (builder, NULL);
     g_object_set(main_window, "application", applet, NULL);
 
     tickets_view =