How do i remove “Powered by WordPress” from AMP?

To remove “Powered by WordPress,” from the AMP plugin’s footer.php template file.
Reference

This new file should reside at:

wp-content/themes/yourtheme/amp/footer.php

Footer.php

<footer class="amp-wp-footer">
    <div>
        <h2><?php echo esc_html( $this->get( 'blog_name' ) ); ?></h2>
        <a href="#top" class="back-to-top"><?php _e( 'Back to top', 'amp' ); ?></a>
    </div>
</footer>

This will ensure that Remove Powered WordPress AMP Plugin will still remain after the plugin is updated next time.