Hide Jetpack CSS v2

<?php
/*
Plugin Name: Jetpack CSS Killer
Description: Kill CSS in Jetpack
*/

add_action( 'admin_print_styles', 'load_custom_admin_css' );
function load_custom_admin_css()
{
echo '<style type="text/css">
.jetpack-message.is-opt-in { visibility: hidden; }
.jp-banner__content { visibility: hidden; }
.jp-banner__action-container is-opt-in { visibility: hidden; }
.jp-banner__button { visibility: hidden; }
.updated jetpack-message jp-banner is-opt-in { visibility: hidden; }
</style>';
}