Remove tzinfo from untimzoned date

issue2439
review238001

tryton/common/common.py

@@ -1460,7 +1460,7 @@ def timezoned_date(date, reverse=False):
     return date
 
 def untimezoned_date(date):
-    return timezoned_date(date, reverse=True)
+    return timezoned_date(date, reverse=True).replace(tzinfo=None)
 
 
 def humanize(size):