function plt_hide_ecab_taxi_booking_manager_menus() {
//Hide the "Transportation" menu.
remove_menu_page('mptbm_rent');
//Hide the "Transportation → Transportation" menu.
remove_submenu_page('mptbm_rent', 'mptbm_rent');
//Hide the "Transportation → Quick Setup" menu.
remove_submenu_page('mptbm_rent', 'mptbm_quick_setup');
}
add_action('admin_menu', 'plt_hide_ecab_taxi_booking_manager_menus', 11);