SILGen: Remove dead code for special-case lowering of protocol methods.
SILGen: Remove dead code for special-case lowering of protocol methods.

These now share the archetype code path.

Swift SVN r22444

lorentey/swift,Jnosh/swift,rudkx/swift,stephentyrone/swift,allevato/swift,hughbe/swift,zisko/swift,austinzheng/swift,milseman/swift,bitjammer/swift,kperryua/swift,allevato/swift,djwbrown/swift,harlanhaskins/swift,jtbandes/swift,shajrawi/swift,ben-ng/swift,tjw/swift,alblue/swift,gregomni/swift,roambotics/swift,kstaring/swift,airspeedswift/swift,parkera/swift,kusl/swift,sschiau/swift,felix91gr/swift,karwa/swift,swiftix/swift.old,SwiftAndroid/swift,russbishop/swift,khizkhiz/swift,austinzheng/swift,felix91gr/swift,sschiau/swift,djwbrown/swift,slavapestov/swift,sdulal/swift,tjw/swift,ken0nek/swift,milseman/swift,frootloops/swift,tinysun212/swift-windows,khizkhiz/swift,felix91gr/swift,brentdax/swift,cbrentharris/swift,glessard/swift,ken0nek/swift,jopamer/swift,ken0nek/swift,adrfer/swift,tkremenek/swift,manavgabhawala/swift,natecook1000/swift,tardieu/swift,JaSpa/swift,djwbrown/swift,bitjammer/swift,jckarter/swift,dduan/swift,xwu/swift,CodaFi/swift,practicalswift/swift,CodaFi/swift,kperryua/swift,modocache/swift,codestergit/swift,shajrawi/swift,ben-ng/swift,LeoShimonaka/swift,milseman/swift,huonw/swift,cbrentharris/swift,gribozavr/swift,tkremenek/swift,gribozavr/swift,sdulal/swift,OscarSwanros/swift,airspeedswift/swift,gottesmm/swift,tkremenek/swift,return/swift,jckarter/swift,benlangmuir/swift,bitjammer/swift,glessard/swift,gottesmm/swift,sschiau/swift,natecook1000/swift,mightydeveloper/swift,milseman/swift,uasys/swift,jtbandes/swift,russbishop/swift,djwbrown/swift,KrishMunot/swift,LeoShimonaka/swift,rudkx/swift,SwiftAndroid/swift,shahmishal/swift,danielmartin/swift,Ivacker/swift,gmilos/swift,tjw/swift,sdulal/swift,tardieu/swift,devincoughlin/swift,kstaring/swift,harlanhaskins/swift,calebd/swift,devincoughlin/swift,jckarter/swift,kentya6/swift,gottesmm/swift,roambotics/swift,danielmartin/swift,therealbnut/swift,bitjammer/swift,gmilos/swift,sschiau/swift,nathawes/swift,amraboelela/swift,milseman/swift,kstaring/swift,jmgc/swift,huonw/swift,uasys/swift,lorentey/swift,huonw/swift,tinysun212/swift-windows,Ivacker/swift,xedin/swift,codestergit/swift,gottesmm/swift,johnno1962d/swift,harlanhaskins/swift,ahoppen/swift,xwu/swift,apple/swift,cbrentharris/swift,JGiola/swift,practicalswift/swift,CodaFi/swift,nathawes/swift,SwiftAndroid/swift,SwiftAndroid/swift,arvedviehweger/swift,hooman/swift,gmilos/swift,khizkhiz/swift,hughbe/swift,sdulal/swift,xwu/swift,sschiau/swift,frootloops/swift,xedin/swift,roambotics/swift,rudkx/swift,devincoughlin/swift,shajrawi/swift,kstaring/swift,hughbe/swift,IngmarStein/swift,ahoppen/swift,frootloops/swift,allevato/swift,Jnosh/swift,swiftix/swift,tkremenek/swift,glessard/swift,therealbnut/swift,LeoShimonaka/swift,ahoppen/swift,JGiola/swift,emilstahl/swift,ben-ng/swift,jopamer/swift,JaSpa/swift,johnno1962d/swift,kusl/swift,benlangmuir/swift,huonw/swift,brentdax/swift,russbishop/swift,aschwaighofer/swift,jckarter/swift,stephentyrone/swift,practicalswift/swift,devincoughlin/swift,return/swift,austinzheng/swift,MukeshKumarS/Swift,khizkhiz/swift,OscarSwanros/swift,karwa/swift,manavgabhawala/swift,sschiau/swift,KrishMunot/swift,djwbrown/swift,hooman/swift,xwu/swift,practicalswift/swift,dduan/swift,xedin/swift,gregomni/swift,arvedviehweger/swift,ben-ng/swift,arvedviehweger/swift,arvedviehweger/swift,JGiola/swift,johnno1962d/swift,roambotics/swift,ben-ng/swift,kentya6/swift,CodaFi/swift,slavapestov/swift,natecook1000/swift,alblue/swift,parkera/swift,shajrawi/swift,airspeedswift/swift,airspeedswift/swift,emilstahl/swift,zisko/swift,tkremenek/swift,tinysun212/swift-windows,CodaFi/swift,russbishop/swift,hooman/swift,tjw/swift,nathawes/swift,jopamer/swift,OscarSwanros/swift,therealbnut/swift,brentdax/swift,return/swift,Jnosh/swift,kperryua/swift,kperryua/swift,lorentey/swift,tinysun212/swift-windows,tardieu/swift,Ivacker/swift,practicalswift/swift,gribozavr/swift,swiftix/swift,Ivacker/swift,CodaFi/swift,shajrawi/swift,tjw/swift,LeoShimonaka/swift,ben-ng/swift,cbrentharris/swift,gottesmm/swift,deyton/swift,apple/swift,kusl/swift,brentdax/swift,LeoShimonaka/swift,lorentey/swift,hughbe/swift,glessard/swift,kentya6/swift,IngmarStein/swift,glessard/swift,cbrentharris/swift,OscarSwanros/swift,atrick/swift,parkera/swift,SwiftAndroid/swift,practicalswift/swift,gribozavr/swift,devincoughlin/swift,JGiola/swift,aschwaighofer/swift,manavgabhawala/swift,mightydeveloper/swift,allevato/swift,Ivacker/swift,danielmartin/swift,codestergit/swift,johnno1962d/swift,frootloops/swift,natecook1000/swift,Jnosh/swift,danielmartin/swift,kentya6/swift,kusl/swift,karwa/swift,uasys/swift,parkera/swift,airspeedswift/swift,apple/swift,CodaFi/swift,codestergit/swift,tardieu/swift,danielmartin/swift,mightydeveloper/swift,arvedviehweger/swift,slavapestov/swift,allevato/swift,amraboelela/swift,deyton/swift,shahmishal/swift,apple/swift,jtbandes/swift,xedin/swift,sschiau/swift,khizkhiz/swift,adrfer/swift,uasys/swift,aschwaighofer/swift,roambotics/swift,OscarSwanros/swift,adrfer/swift,hooman/swift,mightydeveloper/swift,stephentyrone/swift,shahmishal/swift,felix91gr/swift,xedin/swift,harlanhaskins/swift,bitjammer/swift,felix91gr/swift,slavapestov/swift,gribozavr/swift,stephentyrone/swift,tardieu/swift,benlangmuir/swift,uasys/swift,ken0nek/swift,devincoughlin/swift,kstaring/swift,jmgc/swift,amraboelela/swift,gottesmm/swift,kentya6/swift,hooman/swift,MukeshKumarS/Swift,Jnosh/swift,shajrawi/swift,tinysun212/swift-windows,jopamer/swift,jckarter/swift,hughbe/swift,benlangmuir/swift,danielmartin/swift,OscarSwanros/swift,KrishMunot/swift,kentya6/swift,ben-ng/swift,dduan/swift,Jnosh/swift,kperryua/swift,apple/swift,swiftix/swift.old,apple/swift,JaSpa/swift,amraboelela/swift,alblue/swift,modocache/swift,deyton/swift,manavgabhawala/swift,kentya6/swift,LeoShimonaka/swift,devincoughlin/swift,emilstahl/swift,manavgabhawala/swift,Ivacker/swift,tjw/swift,emilstahl/swift,kstaring/swift,swiftix/swift.old,felix91gr/swift,KrishMunot/swift,danielmartin/swift,shahmishal/swift,lorentey/swift,dduan/swift,huonw/swift,tkremenek/swift,alblue/swift,gmilos/swift,JGiola/swift,JaSpa/swift,mightydeveloper/swift,tinysun212/swift-windows,adrfer/swift,xedin/swift,natecook1000/swift,IngmarStein/swift,gribozavr/swift,ken0nek/swift,calebd/swift,jtbandes/swift,cbrentharris/swift,djwbrown/swift,nathawes/swift,mightydeveloper/swift,kperryua/swift,xedin/swift,modocache/swift,johnno1962d/swift,mightydeveloper/swift,swiftix/swift,modocache/swift,nathawes/swift,stephentyrone/swift,ahoppen/swift,atrick/swift,slavapestov/swift,hughbe/swift,atrick/swift,calebd/swift,aschwaighofer/swift,calebd/swift,stephentyrone/swift,zisko/swift,tardieu/swift,karwa/swift,LeoShimonaka/swift,deyton/swift,jmgc/swift,zisko/swift,modocache/swift,uasys/swift,tjw/swift,austinzheng/swift,cbrentharris/swift,MukeshKumarS/Swift,codestergit/swift,jckarter/swift,karwa/swift,jmgc/swift,swiftix/swift,arvedviehweger/swift,gregomni/swift,IngmarStein/swift,dduan/swift,emilstahl/swift,codestergit/swift,xwu/swift,tardieu/swift,zisko/swift,gmilos/swift,sdulal/swift,therealbnut/swift,austinzheng/swift,lorentey/swift,JaSpa/swift,frootloops/swift,benlangmuir/swift,kusl/swift,lorentey/swift,OscarSwanros/swift,brentdax/swift,harlanhaskins/swift,shahmishal/swift,hooman/swift,LeoShimonaka/swift,russbishop/swift,IngmarStein/swift,arvedviehweger/swift,ahoppen/swift,russbishop/swift,johnno1962d/swift,harlanhaskins/swift,gmilos/swift,slavapestov/swift,xwu/swift,devincoughlin/swift,airspeedswift/swift,johnno1962d/swift,aschwaighofer/swift,zisko/swift,lorentey/swift,swiftix/swift.old,austinzheng/swift,allevato/swift,practicalswift/swift,shajrawi/swift,Ivacker/swift,SwiftAndroid/swift,IngmarStein/swift,practicalswift/swift,karwa/swift,jopamer/swift,huonw/swift,kperryua/swift,emilstahl/swift,MukeshKumarS/Swift,jtbandes/swift,jtbandes/swift,IngmarStein/swift,manavgabhawala/swift,return/swift,jmgc/swift,kusl/swift,deyton/swift,gribozavr/swift,roambotics/swift,SwiftAndroid/swift,sdulal/swift,KrishMunot/swift,tkremenek/swift,gregomni/swift,return/swift,kusl/swift,modocache/swift,djwbrown/swift,swiftix/swift,calebd/swift,calebd/swift,tinysun212/swift-windows,mightydeveloper/swift,calebd/swift,alblue/swift,dreamsxin/swift,emilstahl/swift,brentdax/swift,aschwaighofer/swift,jmgc/swift,felix91gr/swift,shahmishal/swift,frootloops/swift,rudkx/swift,khizkhiz/swift,gregomni/swift,swiftix/swift.old,sschiau/swift,bitjammer/swift,adrfer/swift,JGiola/swift,therealbnut/swift,emilstahl/swift,jopamer/swift,Jnosh/swift,benlangmuir/swift,sdulal/swift,codestergit/swift,adrfer/swift,cbrentharris/swift,uasys/swift,frootloops/swift,return/swift,jopamer/swift,sdulal/swift,swiftix/swift,glessard/swift,swiftix/swift.old,therealbnut/swift,allevato/swift,alblue/swift,swiftix/swift.old,gottesmm/swift,atrick/swift,return/swift,JaSpa/swift,kusl/swift,gmilos/swift,ken0nek/swift,austinzheng/swift,huonw/swift,nathawes/swift,natecook1000/swift,swiftix/swift.old,milseman/swift,slavapestov/swift,khizkhiz/swift,brentdax/swift,jtbandes/swift,therealbnut/swift,aschwaighofer/swift,MukeshKumarS/Swift,shajrawi/swift,MukeshKumarS/Swift,modocache/swift,atrick/swift,natecook1000/swift,rudkx/swift,nathawes/swift,bitjammer/swift,harlanhaskins/swift,dduan/swift,Ivacker/swift,dreamsxin/swift,jckarter/swift,amraboelela/swift,parkera/swift,amraboelela/swift,gribozavr/swift,karwa/swift,airspeedswift/swift,MukeshKumarS/Swift,parkera/swift,rudkx/swift,amraboelela/swift,kentya6/swift,gregomni/swift,russbishop/swift,KrishMunot/swift,deyton/swift,zisko/swift,stephentyrone/swift,parkera/swift,swiftix/swift,parkera/swift,hughbe/swift,atrick/swift,xedin/swift,ahoppen/swift,jmgc/swift,xwu/swift,kstaring/swift,shahmishal/swift,alblue/swift,dduan/swift,karwa/swift,deyton/swift,adrfer/swift,milseman/swift,manavgabhawala/swift,hooman/swift,JaSpa/swift,ken0nek/swift,KrishMunot/swift,shahmishal/swift