fix prosperon layout

graphics.cm

@@ -4,7 +4,6 @@ var io = use('cellfs')
 var time = use('time')
 var res = use('resources')
 var json = use('json')
-var os = use('os')
 var staef = use('staef')
 var qoi = use('image/qoi')
 var png = use('image/png')