remove unreachable states, assert they are unreachable just in case#19180
Merged
jreback merged 2 commits intopandas-dev:masterfrom Jan 12, 2018
Merged
remove unreachable states, assert they are unreachable just in case#19180jreback merged 2 commits intopandas-dev:masterfrom
jreback merged 2 commits intopandas-dev:masterfrom
