Remove “Archives:” prefix on WordPress archive titles

function addy_remove_archive_title_prefix($title) {
    if (is_category() || is_tag() || is_author() || is_date() || is_post_type_archive()) {
        $title = preg_replace('/^\w+:\s*/', '', $title);
    }
    return $title;
}
add_filter('get_the_archive_title', 'addy_remove_archive_title_prefix');