Removing TrkObserverTool

...InDetExample/InDetRecExample/python/InDetJobProperties.py

...e/InDetRecExample/share/ConfiguredNewTrackingSiPattern.py

...r/InDetExample/InDetRecExample/share/InDetRecLoadTools.py

...iTrackSelectionTool/InDetDenseEnvAmbiTrackSelectionTool.h

...SelectionTool/src/InDetDenseEnvAmbiTrackSelectionTool.cxx

...Processor/src/DenseEnvironmentsAmbiguityProcessorTool.cxx

...tyProcessor/src/DenseEnvironmentsAmbiguityProcessorTool.h

...cessor/src/DenseEnvironmentsAmbiguityScoreProcessorTool.h

...tion/TrkValInterfaces/TrkValInterfaces/ITrkObserverTool.h

...TrkValidation/TrkValTools/TrkValTools/ObservedTracksMap.h

...g/TrkValidation/TrkValTools/TrkValTools/TrkObserverTool.h

Tracking/TrkValidation/TrkValTools/src/TrkObserverTool.cxx

...dation/TrkValTools/src/components/TrkValTools_entries.cxx