--- a/src/pyams_utils/interfaces/site.py	Sun Jun 17 16:12:40 2018 +0200
+++ b/src/pyams_utils/interfaces/site.py	Sun Jun 17 16:31:07 2018 +0200
@@ -56,19 +56,5 @@
     """Configuration manager marker interface"""
 
 
-class IConfigurationFactory(Interface):
-    """Configuration factory interface
-
-    This factory may be loaded through an adapter
-    """
-
-
-class IBackOfficeConfigurationFactory(Interface):
-    """Back-office configuration factory interface
-
-    This factory may be loaded through an adapter
-    """
-
-
 class IOptionalUtility(Interface):
     """Marker interface for site utilities that can be removed"""