Remove commented out code
Remove commented out code

pcwalton/serde,Hoverbear/serde,Ticki/serde,skade/serde,jmesmon/serde,3Hren/serde,eefriedman/serde,thorbenk/serde,sidred10/serde,infinityb/serde,erickt/serde,tempbottle/serde,JohnHeitmann/serde,csmulhern/serde,oli-obk/rust-serde,Byron/serde,serde-rs/serde