[Archetype builder] Remove some dead code. NFC
[Archetype builder] Remove some dead code. NFC

This code was trying and failing to solve a problem that we do not
have. The "problem" would have been that archetypes show up in
superclass constraints, and the attempted solution---mapping them out
to interface types---wouldn't actually work because resolveArchetype()
doesn't work that way.

parkera/swift,devincoughlin/swift,tardieu/swift,OscarSwanros/swift,apple/swift,allevato/swift,therealbnut/swift,hughbe/swift,danielmartin/swift,huonw/swift,stephentyrone/swift,allevato/swift,devincoughlin/swift,harlanhaskins/swift,practicalswift/swift,devincoughlin/swift,zisko/swift,JaSpa/swift,bitjammer/swift,stephentyrone/swift,deyton/swift,hooman/swift,gmilos/swift,OscarSwanros/swift,airspeedswift/swift,nathawes/swift,bitjammer/swift,tjw/swift,glessard/swift,therealbnut/swift,return/swift,swiftix/swift,brentdax/swift,return/swift,calebd/swift,karwa/swift,danielmartin/swift,felix91gr/swift,atrick/swift,amraboelela/swift,arvedviehweger/swift,atrick/swift,felix91gr/swift,CodaFi/swift,alblue/swift,airspeedswift/swift,manavgabhawala/swift,Jnosh/swift,gribozavr/swift,hughbe/swift,swiftix/swift,JaSpa/swift,glessard/swift,shajrawi/swift,arvedviehweger/swift,sschiau/swift,milseman/swift,tjw/swift,airspeedswift/swift,benlangmuir/swift,allevato/swift,lorentey/swift,stephentyrone/swift,practicalswift/swift,manavgabhawala/swift,lorentey/swift,shahmishal/swift,bitjammer/swift,hooman/swift,xedin/swift,aschwaighofer/swift,Jnosh/swift,deyton/swift,jopamer/swift,danielmartin/swift,aschwaighofer/swift,devincoughlin/swift,CodaFi/swift,jopamer/swift,codestergit/swift,roambotics/swift,natecook1000/swift,Jnosh/swift,huonw/swift,jckarter/swift,gregomni/swift,ben-ng/swift,ahoppen/swift,zisko/swift,rudkx/swift,karwa/swift,Jnosh/swift,frootloops/swift,jopamer/swift,gregomni/swift,deyton/swift,austinzheng/swift,atrick/swift,tkremenek/swift,xwu/swift,Jnosh/swift,jopamer/swift,hughbe/swift,apple/swift,xedin/swift,tinysun212/swift-windows,calebd/swift,CodaFi/swift,practicalswift/swift,shahmishal/swift,djwbrown/swift,xedin/swift,tardieu/swift,calebd/swift,CodaFi/swift,apple/swift,karwa/swift,sschiau/swift,nathawes/swift,milseman/swift,OscarSwanros/swift,tardieu/swift,felix91gr/swift,huonw/swift,shajrawi/swift,CodaFi/swift,Jnosh/swift,shahmishal/swift,airspeedswift/swift,codestergit/swift,sschiau/swift,harlanhaskins/swift,roambotics/swift,ahoppen/swift,djwbrown/swift,tkremenek/swift,gmilos/swift,JGiola/swift,therealbnut/swift,parkera/swift,gottesmm/swift,shahmishal/swift,milseman/swift,devincoughlin/swift,deyton/swift,ben-ng/swift,harlanhaskins/swift,hooman/swift,glessard/swift,amraboelela/swift,gribozavr/swift,JGiola/swift,tardieu/swift,xwu/swift,brentdax/swift,zisko/swift,therealbnut/swift,practicalswift/swift,apple/swift,tardieu/swift,roambotics/swift,jopamer/swift,karwa/swift,shahmishal/swift,atrick/swift,Jnosh/swift,JaSpa/swift,frootloops/swift,stephentyrone/swift,xwu/swift,benlangmuir/swift,sschiau/swift,jtbandes/swift,xwu/swift,xedin/swift,amraboelela/swift,bitjammer/swift,roambotics/swift,frootloops/swift,danielmartin/swift,uasys/swift,natecook1000/swift,alblue/swift,nathawes/swift,shahmishal/swift,airspeedswift/swift,jtbandes/swift,jmgc/swift,djwbrown/swift,codestergit/swift,gregomni/swift,austinzheng/swift,tjw/swift,calebd/swift,parkera/swift,frootloops/swift,jmgc/swift,gmilos/swift,lorentey/swift,harlanhaskins/swift,natecook1000/swift,apple/swift,jmgc/swift,brentdax/swift,jmgc/swift,lorentey/swift,JGiola/swift,OscarSwanros/swift,tjw/swift,djwbrown/swift,shahmishal/swift,manavgabhawala/swift,aschwaighofer/swift,gottesmm/swift,alblue/swift,CodaFi/swift,uasys/swift,ahoppen/swift,amraboelela/swift,arvedviehweger/swift,codestergit/swift,nathawes/swift,austinzheng/swift,aschwaighofer/swift,milseman/swift,ahoppen/swift,xedin/swift,frootloops/swift,zisko/swift,gmilos/swift,arvedviehweger/swift,apple/swift,jmgc/swift,rudkx/swift,return/swift,tinysun212/swift-windows,gottesmm/swift,gribozavr/swift,rudkx/swift,shajrawi/swift,therealbnut/swift,shajrawi/swift,ben-ng/swift,tinysun212/swift-windows,JaSpa/swift,gribozavr/swift,tjw/swift,stephentyrone/swift,manavgabhawala/swift,jckarter/swift,jtbandes/swift,JGiola/swift,shajrawi/swift,austinzheng/swift,uasys/swift,uasys/swift,OscarSwanros/swift,tkremenek/swift,aschwaighofer/swift,return/swift,atrick/swift,devincoughlin/swift,roambotics/swift,tinysun212/swift-windows,parkera/swift,milseman/swift,danielmartin/swift,lorentey/swift,gottesmm/swift,parkera/swift,karwa/swift,felix91gr/swift,airspeedswift/swift,danielmartin/swift,milseman/swift,harlanhaskins/swift,gribozavr/swift,aschwaighofer/swift,djwbrown/swift,karwa/swift,jopamer/swift,jmgc/swift,danielmartin/swift,codestergit/swift,JGiola/swift,glessard/swift,manavgabhawala/swift,gmilos/swift,allevato/swift,return/swift,rudkx/swift,zisko/swift,devincoughlin/swift,xwu/swift,jckarter/swift,gottesmm/swift,austinzheng/swift,djwbrown/swift,roambotics/swift,amraboelela/swift,hughbe/swift,lorentey/swift,gottesmm/swift,brentdax/swift,tkremenek/swift,swiftix/swift,aschwaighofer/swift,hooman/swift,uasys/swift,alblue/swift,deyton/swift,frootloops/swift,jckarter/swift,parkera/swift,tkremenek/swift,shajrawi/swift,tardieu/swift,bitjammer/swift,xwu/swift,gribozavr/swift,tkremenek/swift,swiftix/swift,shajrawi/swift,deyton/swift,hooman/swift,therealbnut/swift,hughbe/swift,felix91gr/swift,huonw/swift,allevato/swift,xedin/swift,therealbnut/swift,felix91gr/swift,calebd/swift,harlanhaskins/swift,gregomni/swift,huonw/swift,practicalswift/swift,hooman/swift,devincoughlin/swift,OscarSwanros/swift,jckarter/swift,arvedviehweger/swift,jmgc/swift,uasys/swift,alblue/swift,ben-ng/swift,alblue/swift,gmilos/swift,rudkx/swift,ahoppen/swift,tjw/swift,codestergit/swift,airspeedswift/swift,zisko/swift,JaSpa/swift,return/swift,frootloops/swift,sschiau/swift,djwbrown/swift,manavgabhawala/swift,swiftix/swift,lorentey/swift,karwa/swift,glessard/swift,benlangmuir/swift,calebd/swift,tardieu/swift,ben-ng/swift,jckarter/swift,brentdax/swift,zisko/swift,lorentey/swift,deyton/swift,hooman/swift,benlangmuir/swift,stephentyrone/swift,xedin/swift,sschiau/swift,return/swift,jtbandes/swift,harlanhaskins/swift,JGiola/swift,amraboelela/swift,ahoppen/swift,nathawes/swift,amraboelela/swift,bitjammer/swift,brentdax/swift,jopamer/swift,benlangmuir/swift,arvedviehweger/swift,alblue/swift,jtbandes/swift,JaSpa/swift,bitjammer/swift,huonw/swift,milseman/swift,atrick/swift,jtbandes/swift,CodaFi/swift,JaSpa/swift,swiftix/swift,brentdax/swift,gribozavr/swift,parkera/swift,gmilos/swift,stephentyrone/swift,rudkx/swift,practicalswift/swift,natecook1000/swift,allevato/swift,felix91gr/swift,uasys/swift,codestergit/swift,allevato/swift,gregomni/swift,ben-ng/swift,calebd/swift,tinysun212/swift-windows,practicalswift/swift,practicalswift/swift,tjw/swift,tinysun212/swift-windows,jckarter/swift,benlangmuir/swift,ben-ng/swift,natecook1000/swift,manavgabhawala/swift,OscarSwanros/swift,hughbe/swift,sschiau/swift,natecook1000/swift,hughbe/swift,shajrawi/swift,karwa/swift,glessard/swift,austinzheng/swift,shahmishal/swift,jtbandes/swift,swiftix/swift,gottesmm/swift,tinysun212/swift-windows,natecook1000/swift,tkremenek/swift,nathawes/swift,austinzheng/swift,nathawes/swift,xedin/swift,arvedviehweger/swift,huonw/swift,sschiau/swift,xwu/swift,gregomni/swift,parkera/swift,gribozavr/swift