[gtk/kill-buttonbox] about dialog: Stop setting secondary

[Matthias Clasen <matthiasc src gnome org>]

commit 179e85f803f1fb6fd50df2fa4f19a7fcd318209a
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Feb 5 03:46:31 2019 -0500

    about dialog: Stop setting secondary
    
    We no longer use a button box, so this is not available.

 gtk/gtkaboutdialog.c | 10 ----------
 1 file changed, 10 deletions(-)
---
diff --git a/gtk/gtkaboutdialog.c b/gtk/gtkaboutdialog.c
index 0fecd74e30..6fcfc1f764 100644
--- a/gtk/gtkaboutdialog.c
+++ b/gtk/gtkaboutdialog.c
@@ -716,22 +716,12 @@ apply_use_header_bar (GtkAboutDialog *about)
       g_signal_connect (priv->credits_button, "toggled", G_CALLBACK (toggle_credits), about);
 
       gtk_dialog_add_action_widget (GTK_DIALOG (about), priv->credits_button, GTK_RESPONSE_NONE);
-      gtk_container_child_set (GTK_CONTAINER (gtk_widget_get_parent (priv->credits_button)),
-                               priv->credits_button,
-                               "secondary", TRUE,
-                               NULL);
 
       priv->license_button = gtk_toggle_button_new_with_mnemonic (_("_License"));
       g_object_bind_property (priv->license_page, "visible",
                               priv->license_button, "visible", G_BINDING_SYNC_CREATE);
       g_signal_connect (priv->license_button, "toggled", G_CALLBACK (toggle_license), about);
 
-      gtk_dialog_add_action_widget (GTK_DIALOG (about), priv->license_button, GTK_RESPONSE_NONE);
-      gtk_container_child_set (GTK_CONTAINER (gtk_widget_get_parent (priv->license_button)),
-                               priv->license_button,
-                               "secondary", TRUE,
-                               NULL);
-
       gtk_dialog_add_button (GTK_DIALOG (about), _("_Close"), GTK_RESPONSE_DELETE_EVENT);
     }
 }