Removing W3 Total Cache Footer Comment

The resource minification effect of W3 Total Cache is excellent - it even minifies HTML. Just look at my webpage source code: line breaks are removed, and the minification is extremely effective. However, at the end of the page, there's an added comment by W3 Total Cache: <! -- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/ Minified using disk: basic Content Delivery Network via lantian.pub Served from: lantian.pub @ 2013-02-13 20:56:59 by W3 Total Cache -- > For someone like me who pursues speed, this not only unnecessarily increases the webpage size but, more importantly, it annoys me whenever I see it. Therefore, I decided to tackle W3 Total Cache and remove the code that generates this comment....