Finished removing deprecated code from rsl/IECoreRI/Spline.h
Finished removing deprecated code from rsl/IECoreRI/Spline.h

davidsminor/cortex,hradec/cortex,lento/cortex,appleseedhq/cortex,appleseedhq/cortex,danieldresser/cortex,goddardl/cortex,hradec/cortex,goddardl/cortex,danieldresser/cortex,lento/cortex,appleseedhq/cortex,danieldresser/cortex,goddardl/cortex,davidsminor/cortex,davidsminor/cortex,davidsminor/cortex,hradec/cortex,danieldresser/cortex,lento/cortex