remove obsolete tested-on comment

Author: Brent Cook

modules/exploits/multi/http/struts_default_action_mapper.rb

@@ -26,9 +26,6 @@ def initialize(info = {})
         "redirectAction:" is not properly sanitized. Since said information will be
         evaluated as OGNL expression against the value stack, this introduces the
         possibility to inject server side code.
-
-        This module has been tested successfully on Struts 2.3.15 and Struts 2.0.11.2 over
-        Tomcat 7, with Windows 2003 SP2 and Ubuntu 10.04 operating systems.
       },
       'License'        => MSF_LICENSE,
       'Author'         =>