Remove expired ports:

2021-01-31 deskutils/orage: Unsupported upstream, cannot work with XFCE 4.16
2021-01-31 sysutils/rubygem-chef-config12
2021-01-31 mail/openwebmail: Does not use modern Perl syntax and no development activity since 2006
2021-01-31 sysutils/rubygem-ohai8
2021-01-31 deskutils/xfce4-volumed: Unsupported upstream, cannot work with XFCE 4.16
2021-01-31 sysutils/rubygem-chef12: Please use sysutils/rubygem-chef instead
2021-01-31 x11/xfce4-embed-plugin: Unsupported upstream, cannot work with XFCE 4.16
2021-01-31 net-p2p/py-transmissionrpc: Unmaintained and dead upstream, use net-p2p/py-transmission-rpc instead
2021-01-31 science/xfce4-equake-plugin: Unsupported upstream, cannot work with XFCE 4.16
2021-01-31 sysutils/xfce4-kbdleds-plugin: Unsupported upstream, cannot work with XFCE 4.16
2021-01-31 textproc/py-gfm: No longer maintained by upstream, please use textproc/py-cmarkgfm instead