Kill support for errata?

We [currently support](https://www.aclanthology.org/info/corrections/) both PDF revisions (a full new paper) and errata (a short PDF that provides commentary on the original. I often find people are confused by this distinction and I have to explain it.

I wonder if we should drop support for errata. Arguments in favor:

* As mentioned, it creates confusion.
* They seem to be a relic from the print era, when it was too expensive to print an entire paper.
* They are hard to discover, in an age where people just print and read papers directly.

Arguments against:

* People hate change?