clang-format; simplify boolean return value

Core/Instrument/IntensityDataFunctions.cpp

Core/Instrument/IntensityDataFunctions.h

Fit/TestEngine/IFactory.h

Fit/TestEngine/MinimizerTestPlan.cpp

Tests/Functional/Core/CoreStandardTest/CoreStandardTest.cpp

Tests/Functional/Core/Fitting/FitTests.cpp

...nctional/Core/SelfConsistenceTest/SelfConsistenceTest.cpp

...Functional/Core/SelfConsistenceTest/SelfConsistenceTest.h

...l/Core/SelfConsistenceTest/SelfConsistenceTestService.cpp

Tests/Functional/Fit/Minimizer/ClassicalTestFunctions.cpp

Tests/Functional/Fit/Minimizer/MinimizerTests.cpp

Tests/Functional/Fit/Minimizer/ResidualTestPlan.cpp

Tests/Functional/GUI/GUIStandardTest/GUIStandardTest.cpp

Tests/Functional/GUI/Other/SaveLoadProject.cpp

Tests/Functional/GUI/Other/Tests.cpp

Tests/Functional/GUI/Translate/TranslationTests.cpp

Tests/Functional/Python/PyEmbedded/Tests.cpp

Tests/Functional/Python/PyStandard/PyStandardTest.cpp

Tests/Functional/Std/StandardTestService.h

Tests/UnitTests/GUI/TestFormFactorItems.cpp