is it anything to do with this? (in my html_header.php)

<?php if (defined('ROBOTS_PAGES_TO_SKIP') && in_array($current_page_base,explode(",",constant('ROBOTS_PAGES_TO_SKIP'))) || $current_page_base=='down_for_maintenance' || $robotsNoIndex === true) { ?>
<meta name="robots" content="noindex, nofollow" />
<?php } ?>
If I take out the "$robotsNoIndex === true" part will this work and will it mess up any other part of my site?