take out reference to previous versions of Rails

actionmailer/README.rdoc

@@ -61,9 +61,7 @@ generated would look like this:
 
   Thank you for signing up!
 
-In previous versions of Rails you would call <tt>create_method_name</tt> and
-<tt>deliver_method_name</tt>.  Rails 3.0 has a much simpler interface - you
-simply call the method and optionally call +deliver+ on the return value.
+In order to send mails, you simply call the method and then call +deliver+ on the return value.
 
 Calling the method returns a Mail Message object: