Removed Simulation2D::getIntensityData completely

Core/Simulation/Simulation2D.cpp

Core/Simulation/Simulation2D.h

Tests/Functional/Python/PyCore/sliced_spheres.py

Tests/Functional/Python/PyCore/transform_BoxComposition.py

Tests/Functional/Python/PyCore/transform_CoreShellBox.py

Tests/Functional/Python/PyCore/transform_box.py

Tests/Functional/Python/PyCore/transform_cube.py

Tests/Functional/Python/PyFit/fitting_utils.py

Tests/Functional/Python/PyFit/testfit_UsingBuilder.py

Wrap/swig/libBornAgainCore.i

auto/Wrap/doxygen_core.i