function plt_hide_comic_book_shortcode_metaboxes() {
$screen = get_current_screen();
if ( !$screen ) {
return;
}
//Hide the "Comic Book Short code" meta box.
remove_meta_box('comicbookshortcode_editor', $screen->id, 'advanced');
}
add_action('add_meta_boxes', 'plt_hide_comic_book_shortcode_metaboxes', 20);