[IRGen] Remove unused ObjC image info flags.
[IRGen] Remove unused ObjC image info flags.

We rely on Clang to set these properly now. No functionality change.

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