Removed _indices, which became a duplicate of _get_indices once it as made private last week
Removed _indices, which became a duplicate of _get_indices once it as made private last week


Former-commit-id: ea48f37ba29f3ef2a4452f2a63ed710b72e03a11
Former-commit-id: c8597276fbe49c52074a89bbb8eb7753d80b290e
stadelmanma/OpenPNM,TomTranter/OpenPNM,PMEAL/OpenPNM,amdouglas/OpenPNM,amdouglas/OpenPNM