How to Hide Advanced Page Visit Counter Admin Menus

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

	//Hide "APVC Dashboard".
	remove_menu_page('advanced-page-visit-counter-dashboard');
	//Hide "APVC Dashboard → APVC Dashboard".
	remove_submenu_page('advanced-page-visit-counter-dashboard', 'advanced-page-visit-counter-dashboard');
	//Hide "APVC Dashboard → Affiliation".
	remove_submenu_page('advanced-page-visit-counter-dashboard', 'advanced-page-visit-counter-dashboard-affiliation');
	//Hide "APVC Dashboard → Contact Us".
	remove_submenu_page('advanced-page-visit-counter-dashboard', 'advanced-page-visit-counter-dashboard-contact');
	//Hide "APVC Dashboard → Support Forum".
	remove_submenu_page('advanced-page-visit-counter-dashboard', 'advanced-page-visit-counter-dashboard-wp-support-forum');
	//Hide "APVC Dashboard → Upgrade".
	remove_submenu_page('advanced-page-visit-counter-dashboard', 'advanced-page-visit-counter-dashboard-pricing');
}

add_action('admin_menu', 'plt_hide_advanced_page_visit_counter_menus', 1000000000);
Where do I put this code?