How to disable comment box from Facebook like widget

It have been a long time since the last time I used Facebook like widget on my blog. At that time, I feel that Facebook scripts take a lot of time to load, hence slowdown my site and affect its performance. Today, I changed my mind and add it back. With just 2 pieces of code (one load all.js at bottom and one load the like button), Facebook like button appears again on my site. Sweet and simple!

But wait. When I test by click on Like button, an ugly comment box appear:

As this is unexpected, I want to disable it. But Facebook Developer page does not give me any information about this. Fortunately, with just one simple CSS trick, I can hide that ugly comment box so the Facebook like become beautiful (like it should)

.fb_edge_widget_with_comment span.fb_edge_comment_widget iframe.fb_ltr {
    display: none !important;

Happy hacking!