diff --git a/product/ERP5/interfaces/open_order_expander.py b/product/ERP5/interfaces/open_order_expander.py
deleted file mode 100644
index f3ea9e96f726390f3c97fdb2f36dd4aee715ae45..0000000000000000000000000000000000000000
--- a/product/ERP5/interfaces/open_order_expander.py
+++ /dev/null
@@ -1,45 +0,0 @@
-# -*- coding: utf-8 -*-
-##############################################################################
-#
-# Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
-#                    Jean-Paul Smets-Solanes <jp@nexedi.com>
-#
-# WARNING: This program as such is intended to be used by professional
-# programmers who take the whole responsability of assessing all potential
-# consequences resulting from its eventual inadequacies and bugs
-# End users who are looking for a ready-to-use solution with commercial
-# garantees and support are strongly adviced to contract a Free Software
-# Service Company
-#
-# This program is Free Software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-#
-##############################################################################
-"""
-Products.ERP5.interfaces.open_order_expander
-"""
-
-from zope.interface import Interface
-
-class IOpenOrderExpander(Interface):
-  """
-    Any class capable of expanding an Open Order Rule
-    follows the OpenOrderExpander interface
-  """
-
-  def expandOpenOrderRule(applied_rule_id=None, force=0, **kw):
-    """
-      This method is invoked by OpenOrderRule to delegate
-      the default implementation of expand
-    """