Fix bug introduced in THcHallCSpectrometer::FineProcess

When making changes to support THcPrimaryKine added line
track->SetEnergy
which set the track energy to energy determined from
measurement of spectrometer delta.
But this energy should be the energy measured by the
Shower calorimeter.
Deleted the line in THcHallCSpectrometer since it is not
needed anyway.

src/THcHallCSpectrometer.cxx

@@ -358,9 +358,7 @@ Int_t THcHallCSpectrometer::FindVertices( TClonesArray& tracks )
     // There is an hpcentral_offset that needs to be applied somewhere.
     // (happly_offs)
     Double_t ptemp = fPcentral*(1+track->GetDp()/100.0);
-    Double_t mtemp = fPartMass/1000.; // fPartMass in MeV , convert to GeV
     track->SetMomentum(ptemp);
-    track->SetEnergy(ptemp*ptemp+mtemp*mtemp);
     TVector3 pvect_temp;
     TransportToLab(track->GetP(),track->GetTTheta(),track->GetTPhi(),pvect_temp);
     track->SetPvect(pvect_temp);