clean up .grin and .grin2 dirs before running the respective tests (#93)
clean up .grin and .grin2 dirs before running the respective tests (#93)


Latrasis/grin,yeastplume/grin,yeastplume/grin,Latrasis/grin,Latrasis/grin,Latrasis/grin,Latrasis/grin,Latrasis/grin