RFC on removing libiscwt-java

[Niels Thykier <niels@thykier.net>]

Hi,

I have been considering to remove libiscwt-java from unstable - it has
low popcon and has no rdeps left[1].

~Niels

[1] Technically, it is also RC buggy, but I believe there is a fix for
that in the Vcs repository.