Remove "Author" in Post

I use the Sparkling theme, and I don’t really need the author section in post page. How to hide or remove that?
I also use the Facebook Comments plug-in to replace the default comment features, but it going to the same section with the post. How to make the comment section to have a different section with the post part?

You can get rid of author bio by adding this code to Theme Options - Other - Custom CSS

.post-inner-content.secondary-content-box  {
  display: none;

Since facebook comments are not part of theme I should see your website to see what is going on.