remove unused rendr_stitch options
remove unused rendr_stitch options

rendrjs/rendr,yhagio/rendr,eGood/rendr0.5,SNASW/rendr,CristinaFoltea/rendr,sarchila/rendr,is00hcw/rendr,alexindigo/rendr,kball/rendr,0111001101111010/rendr,modulexcite/rendr