remove a few old FIXMEs from genbuiltins.py
remove a few old FIXMEs from genbuiltins.py

zeropool/duktape,nivertech/duktape,tassmjau/duktape,nivertech/duktape,jmptrader/duktape,eddieh/duktape,zeropool/duktape,chenyaqiuqiu/duktape,reqshark/duktape,chenyaqiuqiu/duktape,rwaldron/duktape,thurday/duktape,skomski/duktape,markand/duktape,tassmjau/duktape,kphillisjr/duktape,chenyaqiuqiu/duktape,haosu1987/duktape,thurday/duktape,reqshark/duktape,svaarala/duktape,svaarala/duktape,harold-b/duktape,sloth4413/duktape,skomski/duktape,reqshark/duktape,tassmjau/duktape,rwaldron/duktape,reqshark/duktape,pombredanne/duktape,svaarala/duktape,thurday/duktape,reqshark/duktape,kphillisjr/duktape,haosu1987/duktape,sloth4413/duktape,chenyaqiuqiu/duktape,sloth4413/duktape,skomski/duktape,markand/duktape,chenyaqiuqiu/duktape,nivertech/duktape,eddieh/duktape,daimajia/duktape,zeropool/duktape,thurday/duktape,thurday/duktape,reqshark/duktape,zeropool/duktape,jmptrader/duktape,chenyaqiuqiu/duktape,jmptrader/duktape,zeropool/duktape,nivertech/duktape,kphillisjr/duktape,eddieh/duktape,nivertech/duktape,skomski/duktape,haosu1987/duktape,pombredanne/duktape,thurday/duktape,skomski/duktape,svaarala/duktape,harold-b/duktape,kphillisjr/duktape,skomski/duktape,tassmjau/duktape,zeropool/duktape,reqshark/duktape,markand/duktape,kphillisjr/duktape,markand/duktape,pombredanne/duktape,reqshark/duktape,haosu1987/duktape,zeropool/duktape,jmptrader/duktape,harold-b/duktape,eddieh/duktape,sloth4413/duktape,svaarala/duktape,thurday/duktape,skomski/duktape,rwaldron/duktape,haosu1987/duktape,rwaldron/duktape,haosu1987/duktape,harold-b/duktape,chenyaqiuqiu/duktape,pombredanne/duktape,daimajia/duktape,kphillisjr/duktape,eddieh/duktape,haosu1987/duktape,jmptrader/duktape,zeropool/duktape,tassmjau/duktape,svaarala/duktape,pombredanne/duktape,jmptrader/duktape,jmptrader/duktape,pombredanne/duktape,harold-b/duktape,sloth4413/duktape,markand/duktape,daimajia/duktape,tassmjau/duktape,haosu1987/duktape,jmptrader/duktape,markand/duktape,sloth4413/duktape,skomski/duktape,harold-b/duktape,tassmjau/duktape,chenyaqiuqiu/duktape,jmptrader/duktape,nivertech/duktape,markand/duktape,nivertech/duktape,kphillisjr/duktape,skomski/duktape,eddieh/duktape,daimajia/duktape,markand/duktape,pombredanne/duktape,kphillisjr/duktape,tassmjau/duktape,chenyaqiuqiu/duktape,svaarala/duktape,pombredanne/duktape,reqshark/duktape,zeropool/duktape,kphillisjr/duktape,jmptrader/duktape,zeropool/duktape,rwaldron/duktape,markand/duktape,sloth4413/duktape,eddieh/duktape,nivertech/duktape,skomski/duktape,harold-b/duktape,eddieh/duktape,thurday/duktape,pombredanne/duktape,haosu1987/duktape,nivertech/duktape,harold-b/duktape,daimajia/duktape,eddieh/duktape,tassmjau/duktape,tassmjau/duktape,nivertech/duktape,eddieh/duktape,daimajia/duktape,kphillisjr/duktape,sloth4413/duktape,chenyaqiuqiu/duktape,pombredanne/duktape,haosu1987/duktape,sloth4413/duktape,sloth4413/duktape,harold-b/duktape,markand/duktape,thurday/duktape,rwaldron/duktape,harold-b/duktape,thurday/duktape,svaarala/duktape,svaarala/duktape,reqshark/duktape