[Theme: Catch Responsive] How to remove/change credits in footer

I would like to change footer credits on my website, theme developer is linking to their website, it is dofollow link and I think it harms my website SEO.
Footer.php code:

<?php
/**
 * The template for displaying the footer
 *
 * @package Catch Themes
 * @subpackage Catch Responsive
 * @since Catch Responsive 1.0
 */
?>

<?php
    /**
     * catchresponsive_after_content hook
     *
     * @hooked catchresponsive_content_sidebar_wrap_end - 10
     * @hooked catchresponsive_content_end - 30
     * @hooked catchresponsive_featured_content_display (move featured content below homepage posts) - 40
     *
     */
    do_action( 'catchresponsive_after_content' );
?>

<?php
    /**
     * catchresponsive_footer hook
     *
     * @hooked catchresponsive_footer_content_start - 30
     * @hooked catchresponsive_footer_sidebar - 40
     * @hooked catchresponsive_get_footer_content - 100
     * @hooked catchresponsive_footer_content_end - 110
     * @hooked catchresponsive_page_end - 200
     *
     */
    do_action( 'catchresponsive_footer' );
?>

<?php
/**
 * catchresponsive_after hook
 *
 * @hooked catchresponsive_scrollup - 10
 * @hooked catchresponsive_mobile_menus- 20
 *
 */
do_action( 'catchresponsive_after' );?>

<?php wp_footer(); ?>

</body>
</html>