title: Force delete doctrine entity when using SoftDeletable by KnpLabs
body: <p>I'm using SoftDeletable trait in entities from <a href="https://github.com/KnpLabs/DoctrineBehaviors/#softDeletable" rel="nofollow">https://github.com/KnpLabs/DoctrineBehaviors/#softDeletable</a> It's working fine, but sometimes I'd like to force delete the entity. How can I do that?</p>
  
  <p>When I use <code>$em-&gt;remove($entity)</code>, it gets soft-deleted but I need to remove it completely from the database.</p>