Add Empty Cart button on WooCommerce Cart page

create-empty-cart-button.php

<?php

add_action( 'woocommerce_after_cart_contents',  array( $this, 'woo_empty_cart' ) );

/**
 * Create Empty Cart button on WooCommerce cart page
 */
public function woo_empty_cart() {
    global $woocommerce;
    $cart_url = $woocommerce->cart->get_cart_url();
    ?>
    <tr>
        <td colspan="6" class="actions">
            <?php if (empty($_GET)) { ?>
                <a class="button" href="<?php echo $cart_url; ?>?emptycart=yes"><?php _e('Empty Cart', 'woo-empty-cart-button'); ?></a>
            <?php } else { ?>
                <a class="button" href="<?php echo $cart_url; ?>&emptycart=yes"><?php _e('Empty Cart', 'woo-empty-cart-button'); ?></a>
            <?php } ?>
        </td>
    </tr>
    <?php
}