Get rid of un-needed float-specific defines around yuv support. Remove unintended support for rgb to yuv conversion. We only support yuv to rgb conversion.
EXPORTS
_ZN25CTGraphicsImageComparison14CompareBitmapsERK5TSizeRK6TPointRK10CFbsBitmapRK4TRgbm @ 1 NONAME
_ZN25CTGraphicsImageComparison14CompareBitmapsERK5TSizeRK6TPointS5_RK10CFbsBitmapS8_m @ 2 NONAME