Remove expired ports:
2017-01-28 japanese/ruby-eb: Upstream no longer active
2017-03-01 japanese/xyaku: Unmaintained, depends on expired japanese/ruby-eb
2017-03-01 archivers/libunrar4: Outdated version. Please use archivers/libunrar5 instead
2017-03-01 sysutils/xacpim: Mastersite disappeared
2017-03-01 sysutils/linux-nero: Probably cannot actually burn CD/DVD on recent FreeBSD
2017-03-01 audio/libofa: MusicDNS service has been discontinued