Fix to run PHYS and PHYSVAL
This MR removes the truth getters from EGammaCommon as it caused problems with PHYS and PHYSVAL. Local tests were done for the EGamma derivations and they are still running fine. Tagging here @gmarchio for his information. Please let me know if you encounter any problems in the near future related to this. Also tagging @jcatmore, @zmarshal and @wbalunas who are waiting for this fix.
I also enabled PFlow fJVT in DAOD_PHYSVAL.