Delete version history that aren't named

I would really like to be able to delete any version points. Here’s a scenario I run into often. I open a file that hasn’t been updated in a long time to see what’s in it, and determine if it can be deleted if it’s no longer relevant. Navigating around the file I inadvertently do something that causes an autosave event to happen. Now the file has been updated just now (even though it really hasn’t).

P.S. I’ve read this help doc