How to remove action hooking non static method and class can not be instantiated

gistfile1.txt

//http://stackoverflow.com/questions/40788732/how-to-remove-action-hooking-non-static-method-and-class-can-not-be-instantiated/40790864#40790864


/**
 * Do a hard unregister of an object's callback for the specified event name
 * and priority level.
 *
 * In WordPress, the callback key (or unique ID) is generated using the hash ID of
 * the object concatenated with the method name.  In the event that you do not have
 * the object itself, then we use this hard approach to first first the callback
 * function and then do the remove.
 *
 * This process works for both filter and action events.
 *
 * @since 1.0.0
 *
 * @param string $event_name The name of the filter or action event
 * @param integer $priority Priority level
 * @param string $method_name Callback's method name
 *
 * @return void
 */
function do_hard_unregister_object_callback( $event_name, $priority, $method_name ) {
	$callback_function = get_object_callback_unique_id_from_registry( $event_name, $priority, $method_name );
	if ( ! $callback_function ) {
		return false;
	}

	remove_filter( $event_name, $callback_function, $priority );
}

/**
 * Get the object's event registry unique ID for the given event name, priority
 * level, and method name.
 *
 * @since 1.0.0
 *
 * @param string $event_name The name of the filter or action event
 * @param integer $priority Priority level
 * @param string $method_name Callback's method name
 *
 * @return string|boolean
 */
function get_object_callback_unique_id_from_registry( $event_name, $priority, $method_name ) {
	global $wp_filter;

	if ( ! isset( $wp_filter[ $event_name ][ $priority ] ) ) {
		return false;
	}
    echo '<pre>';
    var_dump( $wp_filter );
    echo '</pre>';
	foreach( $wp_filter[ $event_name ][ $priority ] as $callback_function => $registration ) {

		if ( strpos( $callback_function, $method_name, 32) !== false) {
			return $callback_function;
		}
	}

	return false;
}


add_action( 'plugins_loaded', 'remove_woocommerce_add_sold_by_single_callback', 1 );
/**
 * Unregister the WooCommerce `WC_Product_Vendors_Vendor_Frontend::add_sold_by_single` from the
 * event `woocommerce_single_product_summary`.
 *
 * @since 1.0.0
 *
 * @return void
 */

function remove_woocommerce_add_sold_by_single_callback() {
    global $wp_filter;

    var_dump( $wp_filter['woocommerce_single_product_summary'][39] );

    do_hard_unregister_object_callback( 'woocommerce_single_product_summary', 39, 'add_sold_by_single');

    if ( ! isset( $wp_filter['woocommerce_single_product_summary'][39] ) ) {
        var_dump( $wp_filter['woocommerce_single_product_summary'] );
    } else {
        var_dump( $wp_filter['woocommerce_single_product_summary'][39] );
    }
}