some clean up

pythonbindings/src/basics/submodules/configuration_file.cpp

pythonbindings/src/basics/submodules/lbm_or_gks.cpp

pythonbindings/src/gpu/submodules/actuator_line.cpp

pythonbindings/src/gpu/submodules/boundary_conditions.cpp

pythonbindings/src/gpu/submodules/communicator.cpp

pythonbindings/src/gpu/submodules/cuda_memory_manager.cpp

pythonbindings/src/gpu/submodules/file_writer.cpp

pythonbindings/src/gpu/submodules/grid_builder.cpp

pythonbindings/src/gpu/submodules/grid_provider.cpp

pythonbindings/src/gpu/submodules/kernel_factory.cpp

pythonbindings/src/gpu/submodules/parameter.cpp

pythonbindings/src/gpu/submodules/pre_processor_factory.cpp

pythonbindings/src/gpu/submodules/probes.cpp

pythonbindings/src/gpu/submodules/simulation.cpp

...pu/GridGenerator/grid/GridBuilder/MultipleGridBuilder.cpp

...rtualFluids_GPU/DataStructureInitializer/GridProvider.cpp