function plt_hide_easybox_menus() {
//Hide the "Easybox" menu.
remove_menu_page('easybox');
//Hide the "Easybox → Authentication" menu.
remove_submenu_page('easybox', 'easybox_authentication');
//Hide the "Easybox → Properties" menu.
remove_submenu_page('easybox', 'easybox_properties');
}
add_action('admin_menu', 'plt_hide_easybox_menus', 1000);