Remove DISTORTION_LAMBDA_BUGFIX macro

source/Lib/CommonLib/DepQuant.cpp

source/Lib/CommonLib/QuantRDOQ.cpp

source/Lib/CommonLib/RdCost.cpp

source/Lib/CommonLib/RdCostWeightPrediction.cpp

source/Lib/CommonLib/TypeDef.h

source/Lib/CommonLib/x86/RdCostX86.h

source/Lib/EncoderLib/EncAdaptiveLoopFilter.cpp

source/Lib/EncoderLib/EncCu.cpp

source/Lib/EncoderLib/EncGOP.cpp

source/Lib/EncoderLib/EncSampleAdaptiveOffset.cpp

source/Lib/EncoderLib/EncSlice.cpp

source/Lib/EncoderLib/RateCtrl.cpp