Update atomset to avoid overcounting CA for contacts
Update atomset to avoid overcounting CA for contacts

When running protein-protein simulations with one of the proteins as
ligand, the ligand's CA atoms would be counted as contacts

AdaptivePELE/AdaptivePELE,AdaptivePELE/AdaptivePELE,AdaptivePELE/AdaptivePELE,AdaptivePELE/AdaptivePELE