[PrintAsObjC] Simplify tracking of @optional in protocol printing
[PrintAsObjC] Simplify tracking of @optional in protocol printing

The state for @optional vs. @required was only ever referenced from
one function, so we can just put it there.

nathawes/swift,gregomni/swift,JGiola/swift,stephentyrone/swift,gregomni/swift,jmgc/swift,harlanhaskins/swift,hooman/swift,sschiau/swift,airspeedswift/swift,roambotics/swift,xwu/swift,nathawes/swift,gregomni/swift,parkera/swift,aschwaighofer/swift,glessard/swift,gregomni/swift,sschiau/swift,glessard/swift,parkera/swift,allevato/swift,harlanhaskins/swift,benlangmuir/swift,apple/swift,devincoughlin/swift,xwu/swift,tkremenek/swift,nathawes/swift,lorentey/swift,jckarter/swift,parkera/swift,apple/swift,benlangmuir/swift,stephentyrone/swift,glessard/swift,nathawes/swift,devincoughlin/swift,tkremenek/swift,rudkx/swift,atrick/swift,gregomni/swift,gribozavr/swift,JGiola/swift,sschiau/swift,CodaFi/swift,CodaFi/swift,airspeedswift/swift,devincoughlin/swift,devincoughlin/swift,airspeedswift/swift,lorentey/swift,allevato/swift,hooman/swift,apple/swift,rudkx/swift,CodaFi/swift,karwa/swift,stephentyrone/swift,tkremenek/swift,aschwaighofer/swift,rudkx/swift,sschiau/swift,JGiola/swift,allevato/swift,parkera/swift,lorentey/swift,apple/swift,allevato/swift,aschwaighofer/swift,rudkx/swift,sschiau/swift,apple/swift,JGiola/swift,nathawes/swift,jmgc/swift,stephentyrone/swift,roambotics/swift,airspeedswift/swift,gribozavr/swift,devincoughlin/swift,airspeedswift/swift,devincoughlin/swift,rudkx/swift,jmgc/swift,glessard/swift,allevato/swift,JGiola/swift,harlanhaskins/swift,sschiau/swift,gribozavr/swift,harlanhaskins/swift,ahoppen/swift,stephentyrone/swift,roambotics/swift,roambotics/swift,xwu/swift,benlangmuir/swift,aschwaighofer/swift,ahoppen/swift,atrick/swift,devincoughlin/swift,karwa/swift,stephentyrone/swift,karwa/swift,karwa/swift,CodaFi/swift,CodaFi/swift,tkremenek/swift,atrick/swift,hooman/swift,karwa/swift,tkremenek/swift,karwa/swift,lorentey/swift,atrick/swift,hooman/swift,jckarter/swift,ahoppen/swift,ahoppen/swift,benlangmuir/swift,rudkx/swift,karwa/swift,gregomni/swift,karwa/swift,nathawes/swift,gribozavr/swift,glessard/swift,apple/swift,ahoppen/swift,jmgc/swift,xwu/swift,hooman/swift,devincoughlin/swift,atrick/swift,jckarter/swift,xwu/swift,gribozavr/swift,ahoppen/swift,jckarter/swift,hooman/swift,parkera/swift,airspeedswift/swift,JGiola/swift,sschiau/swift,airspeedswift/swift,aschwaighofer/swift,jckarter/swift,gribozavr/swift,lorentey/swift,roambotics/swift,aschwaighofer/swift,aschwaighofer/swift,CodaFi/swift,jmgc/swift,lorentey/swift,jckarter/swift,jmgc/swift,parkera/swift,roambotics/swift,harlanhaskins/swift,hooman/swift,stephentyrone/swift,harlanhaskins/swift,tkremenek/swift,atrick/swift,lorentey/swift,lorentey/swift,xwu/swift,jmgc/swift,allevato/swift,benlangmuir/swift,sschiau/swift,xwu/swift,CodaFi/swift,harlanhaskins/swift,gribozavr/swift,allevato/swift,parkera/swift,parkera/swift,gribozavr/swift,nathawes/swift,glessard/swift,jckarter/swift,benlangmuir/swift,tkremenek/swift