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
_ZN14DynamicPalette12Color16arrayEv @ 1 NONAME
_ZN14DynamicPalette14Color16inverseEv @ 2 NONAME
_ZN14DynamicPalette15SetColor256UtilENS_6TIndexE @ 3 NONAME
_ZN14DynamicPalette19DefaultColor256UtilEv @ 4 NONAME