Discontinuing perl-Mail-GnuPG

[Ralf Corsepius]

Hi,

I indent to discontinue and remove perl-Mail-GnuPG from Fedora.

It FTBFS on rawhide, because it seem to suffer from compatibility issues 
with gnupg2 >= 2.1.5 [1].

AFAIS, nothing in Fedora uses it, so this step probably won't do much harm.

Should gnupg2 in Fedora < 23 be updated, perl-Mail-GnuPG will rendered 
dysfunctional there. I could add "Requires: gnupg2 < 2.1.5" there but 
this is something I'd rather not do.

Ralf

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1234738