Wordpress functions.php: czystka w js oraz css

//czystka w js
function sw_deregister_javascript() {
    wp_deregister_script( 'ngg_script' );
    wp_deregister_script( 'shutter' );
    wp_deregister_script( 'blog-post-calendar-widget' );
    wp_deregister_script( 'jquery-cycle' );
}
add_action( 'wp_print_scripts', 'sw_deregister_javascript', 100 );

//czystka w css
function sw_deregister_styles() {
    wp_deregister_style( 'contact-form-7' );
    wp_deregister_style( 'posts-from-category-widget-stylesheet' );
    wp_deregister_style('wp-pagenavi');
}
add_action( 'wp_print_styles', 'sw_deregister_styles', 100 );