Prune 10 obsolete ports

FreeBSD Ports maintainers have already deleted the following:
  audio/icecast
  databases/akonadi-google
  devel/py-setuptools
  emulators/wine-mono
  mail/gmime
  math/eigen
  net/freeradius
  www/igal
  x11-toolkits/gtkglarea
  x11/oooqs