function plt_hide_otys_jobs_apply_menus() {
//Hide "OTYS".
remove_menu_page('otys');
//Hide "OTYS → Settings 1".
remove_submenu_page('otys', 'otys_settings');
//Hide "OTYS → Cache".
remove_submenu_page('otys', 'otys_cache');
//Hide "OTYS → API Logs".
remove_submenu_page('otys', 'otys_logs');
//Hide "OTYS → Instructions".
remove_submenu_page('otys', 'otys_instructions');
}
add_action('admin_menu', 'plt_hide_otys_jobs_apply_menus', 11);