FIX stock_lot patch (issue17281002_20001)

issue17281002_20001.diff

@@ -1,14 +1,6 @@
 diff -r e9a7f9fd73aa stock.py
 --- a/trytond/trytond/modules/stock_lot/stock.py	Wed Jun 17 11:46:34 2015 +0200
 +++ b/trytond/trytond/modules/stock_lot/stock.py	Wed Jun 17 11:47:43 2015 +0200
-@@ -1,7 +1,6 @@
- #This file is part of Tryton.  The COPYRIGHT file at the top level of
- #this repository contains the full copyright notices and license terms.
- import datetime
--from collections import defaultdict
- 
- from trytond.model import ModelView, ModelSQL, Workflow, fields
- from trytond.pyson import PYSONEncoder, Eval
 @@ -200,64 +199,8 @@
      __name__ = 'stock.inventory'