remove Powered by WP User Frontend

Hi! How remove the text “Powered by WP User Frontend” in the welcome account email?
in wp user frontend plugin there is a file called footer.php and in this file i can see clearly the message displayed in the welcome account email. Take a look at the end of the file…u can see “powered by wp user frontend ecc”. i don’t know what part of the code i have to remove.

<?php
/**
* Email Footer
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
?>
</div>
</td>
</tr>
</table>
<!-- End Content -->
</td>
</tr>
</table>
<!-- End Body -->
</td>
</tr>
</table>
<!-- Footer -->
<table border="0" cellpadding="10" cellspacing="0" width="600" id="template_footer">
<tr>
<td valign="top">
<table border="0" cellpadding="10" cellspacing="0" width="100%">
<tr>
<td colspan="2" valign="middle" id="credit">
<?php
$settings = get_option( 'wpuf_mails' );
if ( is_array( $settings ) && ( isset( $settings['footer_text'] ) && !empty( $settings['footer_text'] ) ) ) {
$footer_text = $settings['footer_text'];
}
$footer_text = empty( $footer_text ) ? sprintf( '&copy; %s. Powered by <a href="%s">WP User Frontend</a>.', get_bloginfo( 'name', 'display' ), 'https://ww.wp.xz.cn/plugins/wp-user-frontend/' ) : $footer_text;
$footer_text = wpautop( wp_kses_post( wptexturize( apply_filters( 'wpuf_email_footer_text', $footer_text ) ) ) );
echo $footer_text;
do_action( 'wpuf_email_after_footer' );
?>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- End Footer -->
</td>
</tr>
</table>
</div>
</body>
</html>