function plt_hide_counter_box_menus() {
//Hide the "Wow Plugins" menu.
remove_menu_page('wow-company');
//Hide the "Wow Plugins → Hey" menu.
remove_submenu_page('wow-company', 'wow-company');
//Hide the "Wow Plugins → Counter Box" menu.
remove_submenu_page('wow-company', 'counter-box');
}
add_action('admin_menu', 'plt_hide_counter_box_menus', 11);