Update AsgClassificationDecorationAlg.cxx - tool must be private for...
Update AsgClassificationDecorationAlg.cxx - tool must be private for consistency with https://gitlab.cern.ch/atlas/athena/-/blob/main/PhysicsAnalysis/Algorithms/AsgAnalysisAlgorithms/python/AsgAnalysisConfig.py#L380
@ravinab this is why the config block wasn't working in AthAnalysis, I believe