Elliot.

given this is already implemented and live in `rippled`, let's update this spec to final and remove the "d" (meaning draft) from the title

Trivial: documentation only, no code change

merging because this is trivial

> I also think that this could be a good exercise and minimal use case for a category of amendments that perform "one-time-cleanup" because I have a feeling that, going...

Good catch. I searched for, and was not able to find, a public alternative. However, I reviewed the code linked, and I think it's OK to open source it. So...