function plt_hide_book_it_fast_menus() {
//Hide the "Book It Fast" menu.
remove_menu_page('bookitfast-main');
//Hide the "Book It Fast → Book It Fast" menu.
remove_submenu_page('bookitfast-main', 'bookitfast-main');
//Hide the "Book It Fast → Login Settings" menu.
remove_submenu_page('bookitfast-main', 'bookitfast-login-settings');
}
add_action('admin_menu', 'plt_hide_book_it_fast_menus', 11);