How to Hide Front End Users Admin Menus

function plt_hide_front_end_only_users_menus() {
	//Hide "F-E Users".
	remove_menu_page('EWD-FEUP-options');
	//Hide "F-E Users → F-E Users".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options');
	//Hide "F-E Users → Users".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Users');
	//Hide "F-E Users → Fields".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Field');
	//Hide "F-E Users → Statistics".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Statistics');
	//Hide "F-E Users → Levels".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Levels');
	//Hide "F-E Users → Options".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Options');
	//Hide "F-E Users → Emails".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Emails');
	//Hide "F-E Users → Payments".
	remove_submenu_page('EWD-FEUP-options', 'EWD-FEUP-options&DisplayPage=Payment');
}

add_action('admin_menu', 'plt_hide_front_end_only_users_menus', 11);

Where do I put this code?