cleanup geant4 and big simpulation plugin dependency

Author: smuzaffar

BigProducts/Simulation/BuildFile.xml

@@ -29,7 +29,6 @@
 <use name="Validation/EcalHits"/>
 <use name="Validation/Geometry"/>
 <use name="Validation/HcalHits"/>
-<use name="Validation/HGCalValidation"/>
 <use name="geant4static"/>
 <use name="g4hepemstatic"/>
 <flags DROP_DEP="geant4core"/>

Validation/HGCalValidation/BuildFile.xml

@@ -8,7 +8,6 @@
 <use name="SimDataFormats/CaloAnalysis"/>
 <use name="RecoLocalCalo/HGCalRecAlgos"/>
 <use name="RecoLocalCalo/HGCalRecProducers"/>
-<use name="geant4core"/>
 <use name="clhep"/>
 <use name="hepmc"/>
 <export>

Validation/HGCalValidation/plugins/BuildFile.xml

@@ -26,7 +26,6 @@
 <use name="SimG4CMS/Calo"/>
 <use name="RecoLocalCalo/HGCalRecAlgos"/>
 <use name="Validation/HGCalValidation"/>
-<use name="geant4core"/>
 <use name="dd4hep"/>
 <use name="clhep"/>
 <use name="hepmc"/>

Validation/HGCalValidation/test/BuildFile.xml

@@ -9,7 +9,6 @@
 <use name="SimDataFormats/CaloTest"/>
 <use name="SimG4CMS/Calo"/>
 <use name="RecoLocalCalo/HGCalRecAlgos"/>
-<use name="geant4core"/>
 <use name="clhep"/>
 <use name="hepmc"/>
 <flags EDM_PLUGIN="1"/>