Remove dependency graph test from test_sos_model
Remove dependency graph test from test_sos_model

nismod/smif,willu47/smif,willu47/smif,nismod/smif,nismod/smif,tomalrussell/smif,tomalrussell/smif,tomalrussell/smif,tomalrussell/smif,nismod/smif,willu47/smif,willu47/smif