Thematic postfooter, only show category/categories

gistfile1.php

<?php

// remove all postfooter information except for post category
// thematictheme.com/forums/topic/post-footer/

// override, show only categories in postfooter
function childtheme_override_postfooter() {
    $post_type = get_post_type();
    $post_type_obj = get_post_type_object($post_type);
    $tagsection = get_the_tags();

    if ( $post_type == 'page' ) {
        $postfooter = '';
    } else {
        $postfooter = '<div class="entry-utility">';
        $postfooter .= thematic_postfooter_postcategory();
        $postfooter .= "\n\t\t\t\t\t</div>";
    }
    echo $postfooter;
}

// override, remove unneeded code from postcategory
function childtheme_override_postfooter_postcategory() {
    $postcategory = "\n\t\t\t\t\t\t" . '<span class="cat-links">';
        if ( is_single() ) {
            $postcategory .= __('Categories ', 'thematic') . get_the_category_list(', ');
        } elseif ( is_category() && $cats_meow = thematic_cats_meow(', ') ) {
            $postcategory .= __('Also posted in ', 'thematic') . $cats_meow;
        } else {
            $postcategory .= __('Posted in ', 'thematic') . get_the_category_list(', ');    
        }
    $postcategory .= '</span>';
    return $postcategory;
}