Icons are showing?

The “Show Facebook icons” determines whether or not to display the icons that appear next to the date for each post. Is that what you are trying to hide? It won’t hide the Facebook profile image that appears at the top of the post or other images in the post. Keep in mind that not all posts have a Facebook icon.

You can hide it through css. Try adding the following to the bottom of the style sheet on the settings page for the plugin:

#facebook_status_box .fb_post .fb_photo
{
display: none;
}