Deleted old testsystems.py
Deleted old testsystems.py

kyleabeauchamp/pymbar,jchodera/pymbar,choderalab/pymbar,jchodera/pymbar,kyleabeauchamp/pymbar,wesbarnett/pymbar,jchodera/pymbar,Lnaden/pymbar,wesbarnett/pymbar,wesbarnett/pymbar,mrshirts/pymbar,jchodera/pymbar,mrshirts/pymbar,Lnaden/pymbar,kyleabeauchamp/pymbar,mrshirts/pymbar,kyleabeauchamp/pymbar,choderalab/pymbar,Lnaden/pymbar,mrshirts/pymbar,choderalab/pymbar,wesbarnett/pymbar