How to remove the inscription and link "Powered" in CMS

Question

I decided to create a website on CMS MediaVibe:

https://bigpin.ru

I'd like to remove the inscription with a link to the developer's site at the bottom of the site. Searched in index.php and found nothing. How can this label be removed?

if(is_admin()) {
echo "<pre class=\"footerdebug\" style='text-align:center'>Time Elapsed: ".(microtime(true) - $sttime)."s</pre> <br />
".$db->debug();
}

Answer 1

div with class row-rights in tpl.footer.php footer: pastebin.com/3UHijV35

<div class="row row-rights">
'.site_copy().'
</div>