Deleting RSS Feeds

I have an RSS feed coming into my global database that is not auto grouping. It’s actually a feed that I want to delete, but all I have are the individual HTML files coming straight into my inbox. I have check the properties of my database and it says 8 RSS. 7 I want to keep but the 8th is the one I want to get rid of but without the RSS Autogroup for that feed I don’t know how to delete it. Please help.

Please start a Support Ticket and provide the URL for the feed. Thanks.