Prune 16 obsolete ports

FreeBSD Ports maintainers have already deleted the following:
  devel/rubygem-yajl-ruby077
  korean/php_doc
  lang/lua4
  lang/ruby18
  lang/tolua4
  multimedia/ffmpeg-devel
  multimedia/ffmpeg1
  net-im/jabber-pymsn
  net-im/msn-proxy
  net-im/p5-Net-MSN
  net-im/p5-POE-Component-Client-MSN
  net-im/pidgin-msn-pecan
  net-im/py-msnp
  net-im/pymsn
  net-im/tmsnc
  net/p5-SOAP-Lite-060
Prune devel/lua-redis-parser