Potentially unused code in maps.inc.php

In 1.8 is was possible to display information about unknown triggers in map elements. The functionality was removed in 2.0 but it seems that some of the related code still remains. Code like:

if ($i['unknown'])

{ $info['info']['unknown'] = array( 'msg' => $i['unknown'].' '._('Unknown'), 'color' => $colors['Gray'] ); }

in getMapsInfo(). It should be removed.