Remove obsolete tools
As discussed in https://gitlab.cern.ch/lhcb-dpa/project/-/issues/8, remove Phys/DaVinciAngleCalculators, Phys/DaVinciMCTools/src/FilterMCParticleArrayByDecay.{h,cpp}, Phys/DaVinciMCTools/src/GenericParticle2MCAssociator.{h,cpp}, Phys/DaVinciTools/src/StandardParticleProvider.{h,cpp}.
This removes a bit more than strictly discussed in https://gitlab.cern.ch/lhcb-dpa/project/-/issues/8 . @tblake , @vchobano , @dgerick , @jonrob .
This MR is required for Phys!909 (merged).
Edited by Patrick Koppenburg