fix the remove files in shci, and support python3 dump function
fix the remove files in shci, and support python3 dump function

gkc1000/pyscf,gkc1000/pyscf,sunqm/pyscf,gkc1000/pyscf,sunqm/pyscf,gkc1000/pyscf,gkc1000/pyscf,sunqm/pyscf,sunqm/pyscf