--- a/entity.py	Thu Jul 17 14:40:28 2014 +0200
+++ b/entity.py	Wed Jul 30 14:06:38 2014 +0200
@@ -22,7 +22,6 @@
 from warnings import warn
 from functools import partial
 
-from logilab.common import interface
 from logilab.common.decorators import cached
 from logilab.common.deprecation import deprecated
 from logilab.common.registry import yes