--- a/ztfy/utils/file.py	Tue Dec 07 17:27:24 2010 +0100
+++ b/ztfy/utils/file.py	Sun May 22 22:37:32 2011 +0200
@@ -18,16 +18,13 @@
 
 # import Zope3 interfaces
 from z3c.form.interfaces import IFileWidget
-from zope.app.file.interfaces import IFile
 from zope.schema.interfaces import IBytes
 
 # import local interfaces
 
 # import Zope3 packages
 from z3c.form.converter import FileUploadDataConverter as BaseDataConverter
-from zope.app.file import File
 from zope.component import adapts
-from zope.schema.fieldproperty import FieldProperty
 
 # import local packages