<footer id="colophon" class="site-footer" role="contentinfo">
<div class="site-info">
<?php
/**
* Fires before the Twenty Fifteen footer text for footer customization.
*
* @since Twenty Fifteen 1.0
*/
do_action( ‘twentyfifteen_credits‘ );
?>
<a href="http://www.mamicode.com/<?php echo esc_url( __( ‘https://wordpress.org/‘, ‘twentyfifteen‘ ) ); ?>"><?php printf( __( ‘Proudly powered by %s‘, ‘twentyfifteen‘ ), ‘WordPress‘ ); ?></a>
</div><!-- .site-info -->
</footer><!-- .site-footer -->

删除底部"自豪地采用 WordPress"