Remove extraneous comma from cmake support file.
Remove extraneous comma from cmake support file.

dan-tull/Halide,ronen/Halide,kgnk/Halide,dougkwan/Halide,psuriana/Halide,tdenniston/Halide,kgnk/Halide,delcypher/Halide,tdenniston/Halide,adasworks/Halide,ronen/Halide,kenkuang1213/Halide,delcypher/Halide,kenkuang1213/Halide,kenkuang1213/Halide,mcanthony/Halide,psuriana/Halide,ronen/Halide,ronen/Halide,dougkwan/Halide,smxlong/Halide,kenkuang1213/Halide,kgnk/Halide,dan-tull/Halide,ronen/Halide,kenkuang1213/Halide,kenkuang1213/Halide,myrtleTree33/Halide,tdenniston/Halide,myrtleTree33/Halide,dougkwan/Halide,kgnk/Halide,dougkwan/Halide,jiawen/Halide,adasworks/Halide,tdenniston/Halide,mcanthony/Halide,adasworks/Halide,adasworks/Halide,delcypher/Halide,mcanthony/Halide,dan-tull/Halide,kgnk/Halide,dan-tull/Halide,dan-tull/Halide,smxlong/Halide,kenkuang1213/Halide,myrtleTree33/Halide,psuriana/Halide,dan-tull/Halide,delcypher/Halide,psuriana/Halide,ronen/Halide,smxlong/Halide,smxlong/Halide,psuriana/Halide,smxlong/Halide,myrtleTree33/Halide,dougkwan/Halide,tdenniston/Halide,dan-tull/Halide,jiawen/Halide,ronen/Halide,ronen/Halide,tdenniston/Halide,dan-tull/Halide,adasworks/Halide,smxlong/Halide,dougkwan/Halide,kgnk/Halide,kenkuang1213/Halide,psuriana/Halide,mcanthony/Halide,jiawen/Halide,adasworks/Halide,jiawen/Halide,jiawen/Halide,jiawen/Halide,adasworks/Halide,kgnk/Halide,delcypher/Halide,delcypher/Halide,dougkwan/Halide,kgnk/Halide,tdenniston/Halide,mcanthony/Halide,delcypher/Halide,mcanthony/Halide,mcanthony/Halide,dougkwan/Halide,psuriana/Halide,jiawen/Halide,smxlong/Halide,mcanthony/Halide,tdenniston/Halide,adasworks/Halide,myrtleTree33/Halide,myrtleTree33/Halide,smxlong/Halide,myrtleTree33/Halide,delcypher/Halide,myrtleTree33/Halide