--- a/src/pyams_utils/interfaces/site.py	Fri Jun 15 16:36:40 2018 +0200
+++ b/src/pyams_utils/interfaces/site.py	Mon Jun 18 10:13:59 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"""

--- a/src/pyams_utils/site.py	Fri Jun 15 16:36:40 2018 +0200
+++ b/src/pyams_utils/site.py	Mon Jun 18 10:13:59 2018 +0200
@@ -20,7 +20,6 @@
     PYAMS_APPLICATION_FACTORY_KEY, PUBLIC_PERMISSION
 from pyams_utils.interfaces.site import ISiteRoot, ISiteRootFactory, INewLocalSiteCreatedEvent, ISiteUpgradeEvent, \
     ISiteGenerations, SITE_GENERATIONS_KEY, IConfigurationManager
-from zope.annotation.interfaces import IAnnotations
 from zope.component.interfaces import IPossibleSite, ObjectEvent
 from zope.traversing.interfaces import ITraversable