[BUG 4.7.0] Blog app has calendar code in it

In /applications/blog/sources/Blog/Blog.php I noticed this code on lines 1445-1448:

	/**
	 * @brief   The class of the ACP \IPS\Node\Controller that manages this node type
	 */
	protected static $acpController = "IPS\\calendar\\modules\\admin\\calendars\\calendars";