filechooserbutton: Don't duplicate tests for GTK_RESPONSE_DELETE_EVENT
filechooserbutton: Don't duplicate tests for GTK_RESPONSE_DELETE_EVENT

Instead, re-run tests made for GTK_RESPONSE_CANCEL with the delete-event response.

Signed-off-by: Federico Mena Quintero <4999915a961edfd7686112c2935288e1266eae14@gnome.org>

Distrotech/gtk,johne53/MB3Gtk-2,Distrotech/gtk,Distrotech/gtk,johne53/MB3Gtk-2,johne53/MB3Gtk-2,Distrotech/gtk,johne53/MB3Gtk-2,johne53/MB3Gtk-2,Distrotech/gtk