[CMake] Remove bogus dependency on "bin/swiftc".
[CMake] Remove bogus dependency on "bin/swiftc".

When we're building the compiler, we already depend on the "swift" target.
When we're /not/ building the compiler, it had better already be there.

Squelches a CMake warning.

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