Delete former member's feed entries and non-working rss feeds
I noticed in commits such as 6c2b58d5, 6af884e3, and 713acb4e that some feeds were commented out from config.ini.
I suggest we simply delete these lines instead, since git preserves that history for us and we can always do some git archeology to reinstate someone's entry. As of now, I think we are better off with a cleaner config.ini file.
@dmustieles what do you think?