do not use deprecated gtk_dialog_set_alternative_button_order

deprecated since gtk+-3.10

src/skey-popup.c

@@ -206,11 +206,6 @@ terminal_skey_do_popup (GtkWindow *window,
 	gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 	gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE);
 
-	gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
-	        GTK_RESPONSE_OK,
-	        GTK_RESPONSE_CANCEL,
-	        -1);
-
 	/* FIXME: make this dialogue close if the screen closes! */
 
 	data = g_new (SkeyData, 1);

src/terminal-app.c

@@ -692,10 +692,7 @@ profile_list_delete_button_clicked_cb (GtkWidget *button,
 	                        GTK_STOCK_DELETE,
 	                        GTK_RESPONSE_ACCEPT,
 	                        NULL);
-	gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
-	        GTK_RESPONSE_ACCEPT,
-	        GTK_RESPONSE_REJECT,
-	        -1);
+
 	gtk_dialog_set_default_response (GTK_DIALOG (dialog),
 	                                 GTK_RESPONSE_ACCEPT);
 
@@ -1245,10 +1242,6 @@ terminal_app_new_profile (TerminalApp     *app,
 
 		gtk_label_set_mnemonic_widget (GTK_LABEL (base_label), combo);
 
-		gtk_dialog_set_alternative_button_order (GTK_DIALOG (app->new_profile_dialog),
-		        GTK_RESPONSE_ACCEPT,
-		        GTK_RESPONSE_CANCEL,
-		        -1);
 		gtk_dialog_set_default_response (GTK_DIALOG (app->new_profile_dialog), GTK_RESPONSE_ACCEPT);
 		gtk_dialog_set_response_sensitive (GTK_DIALOG (app->new_profile_dialog), GTK_RESPONSE_ACCEPT, FALSE);
 	}

src/terminal-window.c

@@ -3144,11 +3144,6 @@ confirm_close_window_or_tab (TerminalWindow *window,
     gtk_dialog_add_button (GTK_DIALOG (dialog), n_tabs > 1 ? _("C_lose Window") : _("C_lose Terminal"), GTK_RESPONSE_ACCEPT);
     gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_ACCEPT);
 
-    gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
-            GTK_RESPONSE_ACCEPT,
-            GTK_RESPONSE_CANCEL,
-            -1);
-
     g_object_set_data (G_OBJECT (dialog), "close-screen", screen);
 
     g_signal_connect (dialog, "destroy",