Fixed MSIL Error

Removed preferred 32bit indicator as noted here

http://social.msdn.microsoft.com/Forums/windowsapps/en-US/927835d1-7c4d-4c30-acb7-848d8de5cb1b/visual-studio-creates-project-configuration-that-generates-the-error-platformanycpu32bitpreferred?forum=toolsforwinapps