How to Hide the "Taxonomy Filters" Admin Menu

function plt_hide_beautiful_taxonomy_filters_menus() {
	//Hide the "Settings → Taxonomy Filters" menu.
	remove_submenu_page('options-general.php', 'taxonomy-filters');
}

add_action('admin_menu', 'plt_hide_beautiful_taxonomy_filters_menus', 11);

Where do I put this code?