How to Hide Magic Link Admin Menus

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

	//Hide "Magic Link".
	remove_menu_page('magic-link');
	//Hide "Magic Link → Dashboard".
	remove_submenu_page('magic-link', 'magic-link');
	//Hide "Magic Link → Magic Links".
	remove_submenu_page('magic-link', 'magic-link-links');
	//Hide "Magic Link → Other Products".
	remove_submenu_page('magic-link', 'magic-link-other-products');
	//Hide "Magic Link → Settings".
	remove_submenu_page('magic-link', 'kc-ml-settings');
	//Hide "Magic Link → Contact Us".
	remove_submenu_page('magic-link', 'magic-link-contact');
	//Hide "Magic Link → Support Forum".
	remove_submenu_page('magic-link', 'magic-link-wp-support-forum');
	//Hide "Magic Link → Upgrade".
	remove_submenu_page('magic-link', 'magic-link-pricing');
}

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