remove unneeded badchars from payload specification

Author: busterb

modules/exploits/windows/http/manageengine_connectionid_write.rb

@@ -42,10 +42,6 @@ def initialize(info={})
         [
           [ 'ManageEngine Desktop Central 9 on Windows', {} ]
         ],
-      'Payload'        =>
-        {
-          'BadChars' => "\x00"
-        },
       'Privileged'     => false,
       'DisclosureDate' => "Dec 14 2015",
       'DefaultTarget'  => 0))