remove unused code, cmake atuo defines it instead
remove unused code, cmake atuo defines it instead

godbyk/OSVR-Core,godbyk/OSVR-Core,leemichaelRazer/OSVR-Core,godbyk/OSVR-Core,OSVR/OSVR-Core,OSVR/OSVR-Core,godbyk/OSVR-Core,leemichaelRazer/OSVR-Core,OSVR/OSVR-Core,leemichaelRazer/OSVR-Core,godbyk/OSVR-Core,OSVR/OSVR-Core,OSVR/OSVR-Core,godbyk/OSVR-Core,OSVR/OSVR-Core,leemichaelRazer/OSVR-Core,leemichaelRazer/OSVR-Core