diff --git a/plone/app/discussion/vocabularies.py b/plone/app/discussion/vocabularies.py
index 895c869..973d042 100644
--- a/plone/app/discussion/vocabularies.py
+++ b/plone/app/discussion/vocabularies.py
@@ -1,10 +1,7 @@
-from zope import interface
-import zope.schema.interfaces
+# -*- coding: utf-8 -*-
 
 from zope.schema.vocabulary import SimpleVocabulary, SimpleTerm
 
-from Products.CMFCore.utils import getToolByName
-
 from plone.app.discussion.interfaces import _ 
 
 HAS_CAPTCHA = False