title: Remove property in Realm object
body: <p>I'm trying to remove a property in one of my Realm objects however I'm not sure how to write a migration for this.</p>
  
  <p>I just removed the property from my object's header file but that didn't work as I get this error: </p>
  
  <blockquote>
    <p>Terminating app due to uncaught exception 'RLMException', reason:
    'Migration is required for object type 'Stock' due to the following
    errors:
    - Property 'percentageOn' is missing from latest object model.'</p>
  </blockquote>
  
  <p>I know how to write a migration add fields, but how do I remove one?</p>