setup.py: Make sure that `nanshe.egg-info` is clean when doing a develop uninstall.
setup.py: Make sure that `nanshe.egg-info` is clean when doing a develop uninstall.

nanshe-org/nanshe,DudLab/nanshe,DudLab/nanshe,jakirkham/nanshe,nanshe-org/nanshe,jakirkham/nanshe