How to Hide Tutor LMS Admin Menus

function plt_hide_tutor_menus() {
	//Hide "Dashboard →".
	remove_submenu_page('index.php', 'tutor-setup');

	//Hide "Tutor LMS".
	remove_menu_page('tutor');
	//Hide "Tutor LMS → Courses".
	remove_submenu_page('tutor', 'tutor');
	//Hide "Tutor LMS → What's New".
	remove_submenu_page('tutor', 'tutor-new-feature');
	//Hide "Tutor LMS → Orders".
	remove_submenu_page('tutor', 'tutor_orders');
	//Hide "Tutor LMS → Coupons".
	remove_submenu_page('tutor', 'tutor_coupons');
	//Hide "Tutor LMS → Create Course".
	remove_submenu_page('tutor', 'create-course');
	//Hide "Tutor LMS → Categories".
	remove_submenu_page('tutor', 'edit-tags.php?taxonomy=course-category&post_type=courses');
	//Hide "Tutor LMS → Tags".
	remove_submenu_page('tutor', 'edit-tags.php?taxonomy=course-tag&post_type=courses');
	//Hide "Tutor LMS → Students".
	remove_submenu_page('tutor', 'tutor-students');
	//Hide "Tutor LMS → Announcements".
	remove_submenu_page('tutor', 'tutor_announcements');
	//Hide "Tutor LMS → Q&A".
	remove_submenu_page('tutor', 'question_answer');
	//Hide "Tutor LMS → Quiz Attempts".
	remove_submenu_page('tutor', 'tutor_quiz_attempts');
	//Hide "Tutor LMS → Addons".
	remove_submenu_page('tutor', 'tutor-addons');
	//Hide "Tutor LMS → Tools".
	remove_submenu_page('tutor', 'tutor-tools');
	//Hide "Tutor LMS → Settings".
	remove_submenu_page('tutor', 'tutor_settings');
	//Hide "Tutor LMS → Upgrade to Pro".
	remove_submenu_page('tutor', 'tutor-get-pro');
}

add_action('admin_menu', 'plt_hide_tutor_menus', 11);
Where do I put this code?