<?php
/** Remove default Ultimatum loop */

remove_action( 'ultimatum_loop', 'ultimatum_standard_loop' );
add_action('ultimatum_loop', 'tribecal_loop');
function tribecal_loop() {
    ?>
<div id="tribe-events-pg-template">
    <?php tribe_events_before_html(); ?>
    <?php tribe_get_view(); ?>
    <?php tribe_events_after_html(); ?>
</div> <!-- #tribe-events-pg-template -->
<?php
}

ultimatum();