pkcs15-oberthur.c: Remove support for DSA in cosm_new_file()
pkcs15-oberthur.c: Remove support for DSA in cosm_new_file()

It is never called with `type` argument of value
SC_PKCS15_TYPE_PUBKEY_DSA

LudovicRousseau/OpenSC,OpenSC/OpenSC,fabled/OpenSC,LudovicRousseau/OpenSC,metsma/OpenSC,dengert/OpenSC,dengert/OpenSC,OpenSC/OpenSC,metsma/OpenSC,metsma/OpenSC,philipWendland/OpenSC,fabled/OpenSC,philipWendland/OpenSC,mouse07410/OpenSC,mouse07410/OpenSC,fabled/OpenSC,OpenSC/OpenSC,philipWendland/OpenSC,dengert/OpenSC,mouse07410/OpenSC,LudovicRousseau/OpenSC,fabled/OpenSC