fix memory leaks in various producers
Memory leaks fixed in:
- AllHadronicSUSY/TreeMaker/src/TreeMaker.cc
- AllHadronicSUSY/Utils/src/LeptonTagAndProbeProducer.cc
- AllHadronicSUSY/Utils/src/PhotonIDisoProducer.cc
- AllHadronicSUSY/Utils/src/ZProducer.cc
Memory leaks fixed in: