function remove_wpf_actions() {

    if ( ! function_exists( 'wp_fusion' ) ) {
        return;
    }

    remove_action( 'woocommerce_order_status_processing', array( wp_fusion()->integrations->woocommerce, 'woocommerce_apply_tags_checkout' ) );

}

add_action( 'plugins_loaded', 'remove_wpf_actions' );