[stdlib] Remove protocol availability annotations
[stdlib] Remove protocol availability annotations

These were for the transition from Beta 3 to Beta 4.  Now that we've
shipped Beta 4, they're obsolete.  Fixes <rdar://problem/17672088>

Swift SVN r20348

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