[Plugin: WordPress Popular Posts] Combining stylesheets – what code to comment out?

I’ve been using YSlow to improve the speed that pages load on my WordPress site. One of the reccomendations is to combine all external stylesheets into one.

I’ve copied the CSS for this plugin into my theme’s stylesheet but I’m not sure which portion of wordpress-popular-posts.php I should comment out to stop the plugin including the reference to it’s own stylesheet.

I’m sure many others would appreciate the heads up on what to edit.