Wordpress: Remove attachment fields

Question

How do I remove attachment fields, like description and alt in media library of Wordpress attachments?

The following code use to work on old Wo

Answer 1

The styles can be printed on /wp-admin/post.php using admin_print_styles-$page, and selecting the elements using the data attribute.

It's possible to detect the current post type and only apply the rules on a given type:

foreach( array( 'post.php', 'post-new.php' ) as $hook )
    add_action( "admin_print_styles-$hook", 'admin_styles_so_25894288');

function admin_styles_so_25894288() {
    global $typenow;
    if( 'post' !== $typenow )
        return;
    ?>