wpc_item_categories

function custom_wpc_item_categories( $category, $params ) {
    if ( $params['params']['show_category'] === 'true' ) {
        $categories_list = get_the_terms($params['post']->ID, $params['post_type_category']);
        $count_$categories_list = count($categories_list);

        if ( $categories_list ) {
            $category = '<p class="wp-posts-carousel-categories">';
            foreach ( $categories_list as $cat ) {

                /*
                * your condition to display only selected categories
                 */
                if ( $categories_list > 1 && $cat->term_id != 8) {

                    $category .= '<a href="' . get_category_link($cat->term_id) . '" title="' . esc_attr(sprintf(__("View all items in %s") , $cat->name)) . '">' . $cat->name . '</a> ';
                }
            }
            $category .= '</p>';
        }
    }
    return $category;
}

add_filter('wpc_item_categories', 'custom_wpc_item_categories', 1, 2);