Remove expired ports:

2020-11-15 archivers/py-pyliblzma: Uses deprecated version of python
2020-11-15 databases/postgis23: Upstream no longer maintained
2020-11-15 databases/py-htsql: Uses deprecated version of python
2020-11-15 devel/bzr-fastimport: Uses deprecated version of python
2020-11-15 devel/py-ToscaWidgets: Uses deprecated version of python
2020-11-15 devel/py-calendar: Uses deprecated version of python
2020-11-15 devel/py-distorm: Uses deprecated version of python
2020-11-15 devel/py-fabric1: Uses deprecated version of python
2020-11-15 devel/py-rcsparse: Uses deprecated version of python
2020-11-15 devel/pyrex: Uses deprecated version of python
2020-11-15 japanese/py-tegaki: Uses deprecated version of python
2020-11-15 math/py-networkx1: Obsolete, please use math/py-networkx instead
2020-11-15 misc/py-progressbar231: Uses deprecated version of python
2020-11-15 multimedia/py-kaa-imlib2: Uses deprecated version of python
2020-11-15 multimedia/py-kaa-metadata: Uses deprecated version of python
2020-11-15 net-im/libtelepathy: Uses deprecated version of python
2020-11-15 security/py-mcrypt: Uses deprecated version of python
2020-11-15 www/py-beautifulsoup32: Uses deprecated version of python
2020-11-15 www/py-evernote: Uses deprecated version of python
2020-04-01 www/py-meld3: EOLed upstream
2020-11-15 www/py-requestbuilder: Uses deprecated version of python
2020-11-15 x11-toolkits/py-SquareMap: Uses deprecated version of python