How to Hide Floating Links Admin Menus

function plt_hide_floating_links_menus() {
	//Hide "Floating links & social icons".
	remove_menu_page('floating_links');
	//Hide "Floating links & social icons → Floating links & social icons".
	remove_submenu_page('floating_links', 'floating_links');
	//Hide "Floating links & social icons → Social Icons".
	remove_submenu_page('floating_links', 'floating-links-social-icons');
	//Hide "Floating links & social icons → Affiliation".
	remove_submenu_page('floating_links', 'floating_links-affiliation');
	//Hide "Floating links & social icons → Support Forum".
	remove_submenu_page('floating_links', 'floating_links-wp-support-forum');
	//Hide "Floating links & social icons → Upgrade".
	remove_submenu_page('floating_links', 'floating_links-pricing');
}

add_action('admin_menu', 'plt_hide_floating_links_menus', 1000000000);

Where do I put this code?