Remove expired ports:
2017-11-04 lang/ats: Unmaintained, outdated, needs lots of refreshment
2017-11-09 games/lordsawar: Broken for more than 6 months
2017-11-09 databases/elixir-ecto_migrate: Broken for more than 6 months
2017-11-09 audio/gspeakers: Broken for more than 6 months
2017-11-09 net/p5-Filesys-SmbClient: Broken for more than 6 months
2017-11-09 audio/tclmidi: Broken for more than 6 months
2017-11-09 security/py-xmlsec: Broken for more than 6 months
2017-11-09 security/samba-virusfilter: Broken for more than 6 months
2017-11-09 textproc/ocaml-pxp: Broken for more than 6 months
2017-11-09 audio/sooperlooper: Broken for more than 6 months
2017-11-09 devel/dwarves: Broken for more than 6 months
2017-11-09 devel/cl-cffi-sbcl: Broken for more than 6 months
2017-11-09 devel/pinba_engine: Broken for more than 6 months
2017-11-09 devel/py-event: Broken for more than 6 months