Remove expired ports:
2021-02-28 audio/beatslash-lv2: Unmaintained and doesn't build with the latest audio/lvtk version 2.x
2021-02-28 multimedia/kodi-addon-vfs.libarchive-devel: Depends on deprecated multimedia/kodi-devel
2021-02-28 multimedia/kodi-addon-peripheral.joystick-devel: Depends on deprecated multimedia/kodi-devel
2021-02-28 multimedia/kodi-devel: Deprecated. Please use multimedia/kodi instead.
2021-02-28 multimedia/kodi-addon-inputstream.adaptive-devel: Depends on deprecated multimedia/kodi-devel
2021-02-28 print/cloud-print-connector: Google Cloud Print has been shut down by Google as of December 31, 2020
2021-02-28 dns/knot2: Use knot3, it is functionally compatible with 2.9.x
2021-02-28 print/cups-cloud-print: Google Cloud Print has been shut down by Google as of December 31, 2020
2021-02-28 www/helma: Upstream is basically dead and recommends ringojs.org