title: Passbook passes can not be removed by app
body: <p>I've implemented Passbook in the normal way and it worked during development and testing perfectly. But the app available at the AppStore can only create and add a pass, but not removing a previously created one.</p>
  
  <p>Here is a little overview of what worked at which stage of development:</p>
  
  <pre><code>                  Simulator     Ad-Hoc Build     AppStore-Build
  Creation of Pass       X              X                  X 
  Updating               X              X                  X      
  Removing               X              X                  -
  </code></pre>
  
  <p>That means creating, updating and deleting a pass works in every step, but at the final AppStore-Build I cannot delete a pass.</p>
  
  <p>I've figured out that the request [PKPassLibrary passWithPassTypeIdentifier:serialnumber:] returns nil before trying to remove a pass. But it the same method returns a valid pass while trying to update a pass.</p>
  
  <p>Has anyone experienced something similar? </p>