Magento: Delete unused product images

<?xml version="1.0" encoding="utf-8"?>


  
    503 first byte timeout
  
  
    Error 503 first byte timeout
    first byte timeout
    Guru Mediation:
    Details: cache-fra19129-FRA 1518817870 341631136
    
    Varnish cache server
  

Links
http://www.magentocommerce.com/magento-connect/defcon2/extension/1147/image-clean/reviews#review_6087
http://stackoverflow.com/questions/4339699/delete-unused-product-images-in-magento