rm unused includes

Tests/Unit/GUI/TestComponentProxyModel.cpp

Tests/Unit/GUI/TestComponentUtils.cpp

Tests/Unit/GUI/TestDataItemViews.cpp

Tests/Unit/GUI/TestMapperCases.cpp

Tests/Unit/GUI/TestOutputDataIOService.cpp

Tests/Unit/GUI/TestParticleItem.cpp

Tests/Unit/GUI/TestProjectDocument.cpp

Tests/Unit/GUI/TestProxyModelStrategy.cpp

Tests/Unit/GUI/TestSaveService.cpp

Tests/Unit/GUI/TestSavingSpecularData.cpp

Tests/Unit/Resample/MaterialTest.cpp

Tests/Unit/Resample/MultilayerAveragingTest.cpp

auto/Wrap/doxygenFit.i

auto/Wrap/libBornAgainFit_wrap.cpp

auto/Wrap/libBornAgainFit_wrap.h