Document the removal of expired ports

• astro/py-pyfits
• devel/py-gitdb
• devel/py-smmap
• devel/rubygem-moneta06
• lang/ruby22
• net/tcptraceroute-devel
• security/rubygem-openssl20
• sysutils/rubygem-hiera1
• www/py-django110
• www/rubygem-http2
• www/rubygem-jekyll-watch1
• www/rubygem-puma2
• www/rubygem-turbolinks-classic