I followed Juggledad's method to get rid of the RSS icons in the BFA Subscribe widget. Actually, I want to keep the RSS orange logo and get rid of anything else, including the email subscription field. We already have a weekly newsletter, so I just want to allow people to add the feed to their Google homepage.
I added the following to the CSS inserts. What do I have to add to get rid of the email field?

.post-text {display: none;}

td.email-text, td.email-button, td.email-field, td.comment-text {display:none;}

will get rid of all but the RSS button in the BFA Subscribe widget

Thanks, Larry! Worked perfectly. I hadn't realized it was a table structure for that widget.