[Archetype builder] Remove weird concrete-same-type assignment.
[Archetype builder] Remove weird concrete-same-type assignment.

It's unclear why we ever thought we needed this, but we clearly don't
now; remove it.

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