How to Hide Academy LMS Admin Menus

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

	//Hide "Academy LMS".
	remove_menu_page('academy');
	//Hide "Academy LMS → Dashboard".
	remove_submenu_page('academy', 'academy');
	//Hide "Academy LMS → Courses".
	remove_submenu_page('academy', 'academy-courses');
	//Hide "Academy LMS → Lessons".
	remove_submenu_page('academy', 'academy-lessons');
	//Hide "Academy LMS → Announcements".
	remove_submenu_page('academy', 'academy-announcements');
	//Hide "Academy LMS → Question & Answer".
	remove_submenu_page('academy', 'academy-question_answer');
	//Hide "Academy LMS → Instructors".
	remove_submenu_page('academy', 'academy-instructors');
	//Hide "Academy LMS → Students".
	remove_submenu_page('academy', 'academy-students');
	//Hide "Academy LMS → Add-ons".
	remove_submenu_page('academy', 'academy-addons');
	//Hide "Academy LMS → Tools".
	remove_submenu_page('academy', 'academy-tools');
	//Hide "Academy LMS → Settings".
	remove_submenu_page('academy', 'academy-settings');
	//Hide "Academy LMS → Get Pro".
	remove_submenu_page('academy', 'academy-get-pro');
}

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