Remove unnecessary inlines
Remove unnecessary inlines

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