remove unused variable
remove unused variable

takahito-tejima/OpenSubdiv,jcowles/OpenSubdiv,xldeveloper/OpenSubdiv,c64kernal/OpenSubdiv,jcowles/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,c64kernal/OpenSubdiv,c64kernal/OpenSubdiv,poljere/OpenSubdiv,anshuarya/OpenSubdiv,poljere/OpenSubdiv,shengfuintel/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,lookup1980/OpenSubdiv,lookup1980/OpenSubdiv,nyotis/OpenSubdiv,poljere/OpenSubdiv,xldeveloper/OpenSubdiv,nyotis/OpenSubdiv,anshuarya/OpenSubdiv,shengfuintel/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,shengfuintel/OpenSubdiv,anshuarya/OpenSubdiv,takahito-tejima/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,jcowles/OpenSubdiv,takahito-tejima/OpenSubdiv,nyotis/OpenSubdiv,lookup1980/OpenSubdiv,xldeveloper/OpenSubdiv