editor/vpn: don't show_all() the widgets

This ends up showing widgets that are to be visible only conditionally. The
widgets to be visible should be created with visible=true in the first place.

[lkundrak@v3.sk: reworded the commit messsage.]

Fixes: 07d900c0

!22

src/connection-editor/page-vpn.c

@@ -75,7 +75,6 @@ finish_setup (CEPageVpn *self, gpointer user_data)
 		return;
 	}
 	g_object_ref_sink (parent->page);
-	gtk_widget_show_all (parent->page);
 }
 
 CEPage *