Problem with a plugin's php file

Hey all,
I was messing around with a wordpress plugin that adds modernizr.js to your blog. Well, I deleted the plugin off the server and then deleted the plugin from the admin panel, in that order, so I don’t know if that is what is causing my issue or not. Anyway, I am getting this error thrown at me when you visit the site:
“Warning: Missing argument 2 for rw_modernizr_nojs() in /homepages/6/d364289486/htdocs/wp-content/plugins/modernizr/modernizr.php on line 23
class=”home blog no-js”>”

I then thought to try and install the plugin again, which I did and is currently installed. It makes the site do what I need it to do in IE, but it’s still throwing the error.

I opened the php file for the plugin and here is what it looks like:

function rw_modernizr() {		wp_deregister_script('modernizr'); // deregister
		// wp_register_script( $handle, $src, $deps, $ver, $in_footer );
		wp_register_script('modernizr', plugins_url('/js/modernizr-1.7.min.js', __FILE__), false, '1.7.0', false); // re register // false for not in footer
		wp_enqueue_script('modernizr'); // load
}
add_action('init', 'rw_modernizr'); // init

// add class no-js to body element since HTML element is not possible
// no-js is required for modernizr to work
add_filter('body_class','rw_modernizr_nojs');
function rw_modernizr_nojs($classes, $class) {
	// add 'my-class' to the $classes array
	$classes[] = 'no-js';
	// return the $classes array
	return $classes;
}

Can anyone help me out with this? Thanks in advance!

and btw, line 23 in the plugin’s php file is this:
function rw_modernizr_nojs($classes, $class) {