Remove obsolete DaVinci algorithms

Several algorithms are identified as candidates for removal in https://gitlab.cern.ch/lhcb-dpa/project/-/issues/94. This removes them.

Removed are:

	deleted:    Phys/DaVinciMCTools/src/FilterEventByMCDecay.cpp
	deleted:    Phys/DaVinciMCTools/src/FilterEventByMCDecay.h
	deleted:    Phys/DaVinciMCTools/src/IsBEvent.cpp
	deleted:    Phys/DaVinciMCTools/src/IsBEvent.h
	deleted:    Phys/DaVinciMCTools/src/MCParticleArrayFilterAlg.cpp
	deleted:    Phys/DaVinciMCTools/src/MCParticleArrayFilterAlg.h
	deleted:    Phys/DaVinciMCTools/src/MCParticleLinkerMaker.cpp
	deleted:    Phys/DaVinciMCTools/src/MCParticleLinkerMaker.h
	deleted:    Phys/DaVinciMCTools/src/MCPrimVertexMaker.cpp
	deleted:    Phys/DaVinciMCTools/src/MCPrimVertexMaker.h
	deleted:    Phys/DaVinciTools/src/AlgorithmCorrelationsAlg.cpp
	deleted:    Phys/DaVinciTools/src/AlgorithmCorrelationsAlg.h
	deleted:    Phys/DaVinciTools/src/CheckSelResult.cpp
	deleted:    Phys/DaVinciTools/src/CheckSelResult.h
	deleted:    Phys/DaVinciTools/src/CheckSelResultsTool.cpp
	deleted:    Phys/DaVinciTools/src/CheckSelResultsTool.h
	deleted:    Phys/DaVinciTools/src/CountParticles.cpp
	deleted:    Phys/DaVinciTrackScaling/src/OldTrackSmearState.cpp
	deleted:    Phys/DaVinciTrackScaling/src/OldTrackSmearState.h
	deleted:    Phys/VertexFitCheck/CMakeLists.txt
	deleted:    Phys/VertexFitCheck/doc/release.notes
	deleted:    Phys/VertexFitCheck/src/CheatedPVReFitter.cpp
	deleted:    Phys/VertexFitCheck/src/CheatedPVReFitter.h
	deleted:    Phys/VertexFitCheck/src/PVChecker.cpp
	deleted:    Phys/VertexFitCheck/src/PVChecker.h
	deleted:    Phys/VertexFitCheck/src/PhotonChecker.cpp
	deleted:    Phys/VertexFitCheck/src/PhotonChecker.h
	deleted:    Phys/VertexFitCheck/src/ProperTimeChecker.cpp
	deleted:    Phys/VertexFitCheck/src/ProperTimeChecker.h
	deleted:    Phys/VertexFitCheck/src/VtxChecker.cpp
	deleted:    Phys/VertexFitCheck/src/VtxChecker.h
	deleted:    Phys/DecayTreeTuple/src/TupleToolSelResults.cpp
	deleted:    Phys/DecayTreeTuple/src/TupleToolSelResults.h