delete deprecated stuff for full matrix approach

src/gpu/core/BoundaryConditions/Velocity/Velocity.cu

...Conditions/Velocity/VelocityInterpolatedIncompressible.cu

src/gpu/core/BoundaryConditions/Velocity/Velocity_Device.cuh

...e/DataStructureInitializer/GridReaderFiles/GridReader.cpp

...tructureInitializer/GridReaderGenerator/GridGenerator.cpp

src/gpu/core/GridScaling/GridScalingKernelManagerTest.cpp

src/gpu/core/Output/AnalysisData.hpp

src/gpu/core/Output/UnstructuredGridWriter.hpp

src/gpu/core/Parameter/Parameter.cpp

src/gpu/core/Parameter/Parameter.h

src/gpu/core/Parameter/ParameterTest.cpp

src/gpu/core/PostProcessor/PlaneCalculations.cpp

src/gpu/core/PostProcessor/PlaneCalculations.h