sorry, revert previsous change, it is already defined well on Base

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11543 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Item.py

@@ -60,7 +60,6 @@ class Item(XMLObject, Amount, ImmobilisableItem):
     add_permission = Permissions.AddPortalContent
     isPortalContent = 1
     isRADContent = 1
-    isMovement = 0
 
     # Declarative security
     security = ClassSecurityInfo()