Custom jquery loading

2.1.3

add_action('wp_enqueue_scripts', 'sg_jquery_remove');
function sg_jquery_remove() {
    wp_deregister_script('jquery');
}

add_action('sg_after_footer', 'sg_script_add_body');
function sg_script_add_body() {
    wp_register_script('jquery', 'http://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js');   
}