This looks promising if there is a delete option showing up even if it's not working. Looks like we might finally get a way to delete all the cruddy apps we will never use on our accounts soon.
Just checked I have this option now on Firefox via Desktop! Wheeee! I'm going delete happy!

It works!!! I am now 20 apps lighter.

I synced on my phone and it removed them from My Apps haven't tried on the Fire but when we first got our phones hubby went hog wild on free crappy apps and I had to wade through them to find anything I bought and now I don't anymore!
There are a few on my account that don't have a delete button yet but most of them are gone! Woohoo!