Printer remove notification typo

[Matthias Clasen <mclasen redhat com>]

When we added printer removal notification to libgnomecups,
we made a little c'n'p error. 

guint 
gnome_cups_printer_printer_removed_notify_add  
                                  (GnomeCupsPrinterAddedCallback,
		                   gpointer user_data);


should really be

guint 
gnome_cups_printer_printer_removed_notify_add  
                                  (GnomeCupsPrinterRemovedCallback,
		                   gpointer user_data);


Ok to make this change ?

Matthias