Strip WP tags from menu

wpMenuCustom.txt

<?php
         echo strip_tags(
             wp_nav_menu(
                 array('theme_location' => 'primary',
                     'container_class' => 'top-nav',//custom container class
                     'echo' => false,
                     'items_wrap' => '%3$s'
                 )
             ),
             '<a><div>'
         ); ?>