Fix failing py 3.x builds thanks to constants generation script by removing filter call

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' into vectorize_PropsSI
Removed unneeded overloads of PropsSI function, leaving only PropsSI and PropsSImulti

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>