Merge pull request #12784 from mantidproject/11872_delete_peaks

...amework/DataObjects/inc/MantidDataObjects/PeakShapeBase.h

...rk/DataObjects/inc/MantidDataObjects/PeakShapeEllipsoid.h

Code/Mantid/Framework/DataObjects/src/PeakShapeEllipsoid.cpp

...antid/Framework/DataObjects/test/PeakShapeEllipsoidTest.h

Code/Mantid/MantidPlot/CMakeLists.txt

.../MantidPlot/src/Mantid/InstrumentWidget/InputController.h

...d/MantidPlot/src/Mantid/InstrumentWidget/Projection3D.cpp

...tidPlot/src/Mantid/InstrumentWidget/ProjectionSurface.cpp

...antidPlot/src/Mantid/InstrumentWidget/ProjectionSurface.h

...ntidPlot/src/Mantid/InstrumentWidget/UnwrappedSurface.cpp

Code/Mantid/MantidQt/MantidWidgets/CMakeLists.txt

...MantidWidgets/inc/MantidQtMantidWidgets/InputController.h

Code/Mantid/MantidQt/MantidWidgets/src/InputController.cpp

Code/Mantid/MantidQt/SliceViewer/CMakeLists.txt

...eViewer/inc/MantidQtSliceViewer/CompositePeaksPresenter.h

...ceViewer/inc/MantidQtSliceViewer/ConcretePeaksPresenter.h

.../SliceViewer/inc/MantidQtSliceViewer/NullPeaksPresenter.h

...ntidQt/SliceViewer/inc/MantidQtSliceViewer/PeakEditMode.h

...ceViewer/inc/MantidQtSliceViewer/PeakOverlayInteractive.h

...iceViewer/inc/MantidQtSliceViewer/PeakOverlayMultiCross.h