I used to have a self-hosted WordPress blog associated with my account (using the JetPack extension), but I've since migrated over and my blog is now hosted at WordPress.com. However, even after delinking my self-hosted blog, it still shows up in my account as one of "My Blogs", and WordPress still gives me the option to reblog posts to that account (even though it is disconnected and indeed there is no WordPress installation on that web server any more).
I have just been ignoring it for the past few months, but today I accidentally reblogged something to my non-existent blog (how?), and I'd really appreciate some help in fully disconnecting / delinking these no-longer-existent blogs from my account, so this doesn't happen again. Also to clean up my user interface (removing links to blogs that no longer exist).
The blog I need help with is dgoerger.wordpress.com.