Remove expired ports:
2017-02-08 misc/teslams: Broken for more than 6 months
2017-02-08 devel/libdict: Broken for more than 6 months
2017-02-08 math/R-cran-SuppDists: Broken for more than 6 months
2017-02-08 devel/py-re2: Broken for more than 6 months
2017-02-08 net-p2p/digitalcoin: Broken for more than 6 months