SILOptimizer: comment out some code to avoid warnings
SILOptimizer: comment out some code to avoid warnings

@_specialize is not fully enabled right now, and there is code which
has been preprocessed away.  There were some declarations that were left
behind.  This removes them to avoid the unused warning/unused
function/unused private member warnings.  NFC.

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