[gtk/kill-containers: 48/55] assistant: Remove code that doesn't work anymore

[Matthias Clasen <matthiasc src gnome org>]

commit 6bc4446e3e1f492de8b90ad0c8bae8862cc19e69
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri May 8 15:58:57 2020 -0400

    assistant: Remove code that doesn't work anymore
    
    When GtkContainer goes away, we don't have
    an "add" signal anymore.

 gtk/gtkassistant.c | 13 -------------
 1 file changed, 13 deletions(-)
---
diff --git a/gtk/gtkassistant.c b/gtk/gtkassistant.c
index 3f890c9552..2741c84f39 100644
--- a/gtk/gtkassistant.c
+++ b/gtk/gtkassistant.c
@@ -371,17 +371,6 @@ gtk_assistant_get_property (GObject      *object,
     }
 }
 
-static void
-add_cb (GtkContainer *container,
-        GtkWidget    *widget,
-        GtkAssistant *assistant)
-{
-  if (assistant->use_header_bar)
-    g_warning ("Content added to the action area of an assistant using header bars");
-
-  gtk_widget_show (GTK_WIDGET (container));
-}
-
 static void
 apply_use_header_bar (GtkAssistant *assistant)
 {
@@ -389,8 +378,6 @@ apply_use_header_bar (GtkAssistant *assistant)
   gtk_widget_set_visible (assistant->headerbar, assistant->use_header_bar);
   if (!assistant->use_header_bar)
     gtk_window_set_titlebar (GTK_WINDOW (assistant), NULL);
-  else
-    g_signal_connect (assistant->action_area, "add", G_CALLBACK (add_cb), assistant);
 }
 
 static void