How to Hide Smart Sense Admin Menus

function plt_hide_smart_sense_menus() {
	//Hide "Tools → Scheduled Actions".
	remove_submenu_page('tools.php', 'action-scheduler');

	//Hide "Smart Sense".
	remove_menu_page('smart-sense');
	//Hide "Smart Sense → Dashboard".
	remove_submenu_page('smart-sense', 'http://127.0.0.1/wp-admin/admin.php?page=smart-sense#/dashboard');
	//Hide "Smart Sense → Add Documents".
	remove_submenu_page('smart-sense', 'http://127.0.0.1/wp-admin/admin.php?page=smart-sense#/documents');
	//Hide "Smart Sense → Settings".
	remove_submenu_page('smart-sense', 'http://127.0.0.1/wp-admin/admin.php?page=smart-sense#/settings');
}

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

Where do I put this code?