remove debugging printfs
remove debugging printfs

brson/lalrpop,nikomatsakis/lalrpop,willcrichton/lalrpop,dagit/lalrpop,tempbottle/lalrpop,tempbottle/lalrpop,timtadh/lalrpop,dagit/lalrpop,timtadh/lalrpop,brson/lalrpop,nikomatsakis/lalrpop,willcrichton/lalrpop