Remove inheritance (makes no sense in propertysheets) and consider removing...

Remove inheritance (makes no sense in propertysheets) and consider removing this propertysheet itself.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41648 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5PropertySheetLegacy/PropertySheet/PackingList.py

@@ -25,10 +25,8 @@
 #
 ##############################################################################
 
-from Order import Order
 
-
-class PackingList(Order):
+class PackingList:
   """A property sheet class for packing list.
 
   Packing list can be considered as a kind of small order which does not