Bug#960855: libmousex-foreign-perl: uses deprecated Any::Moose

[intrigeri]

Apart of the Any::Moose indicator: last upstream commit was 6 years
ago, tiny popcon, leaf package, only 3 reverse dependencies on CPAN
(of which 2 have not been updated since 2014), and finally the Mouse
ecosystem is essentially on life-support as the community has been
adopting alternate OO frameworks

⇒ I propose we remove this package.

I'll file the RM bug at some point after 2020-07-19, unless
someone objects.

(And in passing, I noticed that many other libmouse*-perl are in
similar situations, regardless of Any::Moose, so there's a good chance
you hear from me about them one of these days.)