Remove redundant protocol conformance test.
Remove redundant protocol conformance test.

This test was designed to ensure that extensions that only add a
non-objc-compatible protocol are not printed in a compatibility header.
That case is already covered by the `extension NSString : NotObjC {}`
test in `PrintAsObjC/protocols.swift`.

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