missed another change

test/models/comment.rb

@@ -1,9 +1,5 @@
 # this class is only meant for compatability mode testing
 class Comment < ActiveRecord::Base
-  # stampable   :stamper_class_name => :person
-  stampable   :stamper_class_name => :person,
-              :creator_attribute  => :created_by,
-              :updater_attribute  => :updated_by,
-              :deleter_attribute  => :deleted_by
+  stampable   :stamper_class_name => :person
   belongs_to  :post
 end