Remove expired ports:
2016-08-20 databases/py-sqlalchemy06: Upstream has declared this version EoL: please migrate to databases/py-sqlalchemy10
2016-05-02 print/py-reportlab2: no longer supported - use reportlab 3.x (py-reportlab) instead
2016-12-08 devel/py-itools: Depends on broken and expired py-reportlab2
2016-12-08 graphics/py-aafigure: Depends on broken and expired py-reportlab2
2016-12-08 converters/py-pisa: Deprecated upstream, depends on broken and expired py-reportlab2