Remove just default text in footer

Hello,
how do I remove the default text in footer: “Theme by Colorlib Powered by WordPress”?
I would like to keep my copyright text there.
http://theelegantquill.com/

Thank you!

Hey there,

I hope you are well today and thank you for your question.

To do this you’ll have to edit the theme code.

The file you’ll need to edit is located in travelify/library/structure/footer-extensions.php
Line 34:
Replace

function travelify_footer_info() {
   echo '<div class="copyright">'.__( 'Copyright &copy;', 'travelify' ).' '.date('Y').' '.travelify_site_link().'. '.__( 'Theme by', 'travelify' ).' '.travelify_colorlib_link().' '.__( 'Powered by', 'travelify' ).' '.travelify_wp_link().'</div><!-- .copyright -->';
}

with

function travelify_footer_info() {
   echo '<div class="copyright">'.__( 'Copyright &copy;', 'travelify' ).' '.date('Y').' '.travelify_site_link().''.'</div><!-- .copyright -->';
}

Best regards,
Support.