Remove default target because there is no auto-select

Author: wchen-r7

modules/exploits/windows/misc/wireshark_mpeg_overflow.rb

@@ -63,8 +63,8 @@ def initialize(info = {})
           ],
         ],
       'Privileged'     => false,
-      'DisclosureDate' => 'Mar 20 2014',
-      'DefaultTarget'  => 1))
+      'DisclosureDate' => 'Mar 20 2014'
+    ))
 
     register_options(
       [