Arclite Theme – How to get rid of rel="category tag"

http://shushureview.com

I’m trying to get the skin to be valid, but the rel=”category tag” on the category is messing that up.

<p class="post-author">
            <span class="info"><?php printf(__('Posted by %s in %s','arclite'),'<a href="'. get_author_posts_url(get_the_author_ID()) .'">'. get_the_author() .'</a>',get_the_category_list(', '));
            ?> | <?php comments_popup_link(__('No Comments', 'arclite'), __('1 Comment', 'arclite'), __('% Comments', 'arclite'), 'comments', __('Comments off', 'arclite')); ?>  <?php edit_post_link(__('Edit','arclite'),' | '); ?>
            </span>
           </p>

[Moderator Note: Please post code or markup snippets between backticks or use the code button.]

I know only a little php, but I’m pretty sure it’s the second %s in

printf(__(‘Posted by %s in %s’,’arclite’)

I just don’t know where the second %s is being created. Tried looking through every file in the skin that had “rel” in it, but none of them turn up what I’m looking for.

Alternately, if there’s a way to make the w3 validator be cool with this specific rel, that would be awesome.