Move arch out of target

Author: jvazquez-r7

modules/exploits/windows/browser/ms13_022_silverlight_script_object.rb

@@ -55,6 +55,7 @@ def initialize(info={})
           'EXITFUNC'             => 'thread'
         },
       'Platform'       => 'win',
+      'Arch'           => ARCH_X86,
       'BrowserRequirements' =>
         {
           :source      => /script|headers/i,
@@ -64,11 +65,7 @@ def initialize(info={})
         },
       'Targets'        =>
         [
-          [ 'Windows x86/x64',
-            {
-              'arch' => ARCH_X86
-            }
-          ]
+          [ 'Windows x86/x64', {} ]
         ],
       'Privileged'     => false,
       'DisclosureDate' => "Mar 12 2013",