[CODE] Removed unactive (commented out) parts of the code.

src/CSVReader/CSVReader.cpp

src/CSVReader/CSVReader.h

src/CrossValidator/CrossValidator.cpp

src/CrossValidator/CrossValidator.h

src/DataSet/DataSet.cpp

src/DataSet/DataSet.h

src/DataSet/DataSetSerialization.h

src/ErrorFunction/ErrorFunctions.cpp

src/ErrorFunction/ErrorFunctions.h

src/ErrorFunction/ErrorFunctionsMock.h

src/General/ExprtkWrapperSerialization.h

src/LearningMethods/GradientDescent.cpp

src/LearningMethods/GradientDescentBB.cpp

src/LearningMethods/GradientDescentSingleItem.cpp

src/LearningMethods/LevenbergMarquardt.cpp

src/LearningMethods/LevenbergMarquardt.h

src/LearningMethods/ParticleSwarm.cpp

src/LearningMethods/RandomSolution.cpp

src/NetConnection/ConnectionFunctionGeneralSerialization.h

src/NetConnection/ConnectionFunctionIdentity.cpp