SonataAdminBundle/Resources/views/CRUD/list__action_delete.html.twig

{% if admin.isGranted('DELETE') and admin.hasRoute('delete') %}
    <a href="{{ admin.generateUrl('delete', {'id': admin.id(object)}) }}" class="delete_link" title="{% trans from 'SonataAdminBundle' %}action_delete{% endtrans %}">
        <img src="{{ asset('bundles/sonataadmin/famfamfam/delete.png') }}" alt="{% trans from 'SonataAdminBundle' %}action_delete{% endtrans %}" />
    </a>
{% endif %}