Remove expired ports:
2021-01-23 sysutils/bareos16-client: Unmaintained, please migrate to a newer version of bareos
2021-01-23 sysutils/bareos16-client-static: Unmaintained, please migrate to a newer version of bareos
2021-01-23 sysutils/bareos16-server: Unmaintained, please migrate to a newer version of bareos
2021-01-23 www/bareos16-webui: Unmaintained, please migrate to a newer version of bareos