How to Hide the "Dashboard Access" Admin Menu

function plt_hide_remove_dashboard_access_for_non_admins_menus() {
	//Hide the "Settings → Dashboard Access" menu.
	remove_submenu_page('options-general.php', 'dashboard-access');
}

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

Where do I put this code?