Remove expired ports:
2016-12-31 devel/rubygem-devise-async-rails4: Not compatible with devel/rubygem-devise > 3
2016-12-31 devel/rubygem-devise-async: Not compatible with devel/rubygem-devise > 3
2016-12-31 net/iet: Upstream no longer active
2016-12-31 sysutils/geomgui: Development stopped years ago.
2016-12-31 sysutils/screen-legacy: Old version released 2008-08-07 no longer upline maintained.
2016-12-31 sysutils/ntfsprogs: Superseded by sysutils/fusefs-ntfs
2016-12-31 www/rubygem-jekyll2: Use www/rubygem-jekyll instead
2016-12-31 databases/rubygem-dm-devise: Not compatible with devel/rubygem-devise > 3
2016-12-31 devel/rubygem-sprockets211: Use devel/rubygem-sprockets or devel/rubygem-sprockets3 instead
2016-12-31 devel/p5-Parse-CPAN-Meta: Merged into devel/p5-CPAN-Meta 2.150008
2016-12-31 devel/jtag: development ceased 2003, superceded by devel/urjtag