the "When I open the comment box" step used an old javascript function of ours...

the "When I open the comment box" step used an old javascript function of ours that no longer exists. remove the feature and replace it with "When I focus the comment field"

features/comments.feature

@@ -73,7 +73,7 @@ Feature: commenting
     Then I should see "Look at this dog"
     When I follow "less than a minute ago"
     Then I should see "Look at this dog"
-    When I open the comment box
+    When I focus the comment field
     And I fill in "text" with "I think thats a cat"
     And I press "Comment"
     And I wait for the ajax to finish

features/step_definitions/comment_steps.rb

@@ -2,10 +2,6 @@ When /^I focus the comment field$/ do
   find("a.focus_comment_textarea").click
 end
 
-When /^I open the comment box$/ do
-  page.evaluate_script('Stream.focusNewComment($(".stream_element"), {preventDefault: function(){}})')
-end
-
 Then /^the first comment field should be open/ do
   find("#main_stream .stream_element .new_comment").should be_visible
 end