[Twisted-Python] upcoming OSCAR protocol removal

[Glyph]

One of the earliest protocols implemented in Twisted was AOL's instant messenger protocol.   However, as explained on <https://twistedmatrix.com/trac/ticket/8260>, it doesn't really make sense for us to continue maintaining that code unless we can find someone actively interested in keeping it working against the production AIM service.

If you are interested in keeping this code alive, act quickly, before the deprecation makes it into a release and clears the way for a subsequent removal :-).

-glyph