How do I delete "Proudly powered by WordPress…" in footer.php?

Hi,

how can I technically remove the infamous “Proudly powered by WP…” in footer.php in RYU template?

The original the content of footer.php is:

<?php
/**
 * The template for displaying the footer.
 *
 * Contains the closing of the id=main div and all content after
 *
 * @package Ryu
 */
?>

	</div><!-- #main -->

	<footer id="colophon" class="site-footer" role="contentinfo">
		<div class="site-info wrap">
			<?php do_action( 'ryu_credits' ); ?>
			<a href="https://www.ads-software.com/" title="<?php esc_attr_e( 'A Semantic Personal Publishing Platform', 'ryu' ); ?>" rel="generator"><?php printf( __( 'Proudly powered by %s', 'ryu' ), 'WordPress' ); ?></a>
			<span class="sep"> | </span>
			<?php printf( __( 'Theme: %1$s by %2$s.', 'ryu' ), 'Ryu', '<a href="https://theme.wordpress.com/themes/ryu/" rel="designer">WordPress.com</a>' ); ?>
		</div><!-- .site-info -->
	</footer><!-- #colophon -->
</div><!-- #page -->

<?php wp_footer(); ?>

</body>
</html>

Thanks!