I haven't done so personally. A lot of my old activity had to do with helping people with programming questions, so if it's still useful to someone on occasion, I don't feel inclined to remove it.
I left reddit a little over a year ago now, and I don't really care about what goes on over there. I made my statement of displeasure by simply ending all activity on the platform. I figure whatever legacy I left will eventually descend into irrelevance without my having to physically delete it all. At this point, that just sounds like work.