build: remove ICU references in `_add_swift_host_library_single`
build: remove ICU references in `_add_swift_host_library_single`

stephentyrone/swift,jmgc/swift,xwu/swift,allevato/swift,nathawes/swift,nathawes/swift,apple/swift,roambotics/swift,gregomni/swift,tkremenek/swift,xwu/swift,hooman/swift,jmgc/swift,parkera/swift,benlangmuir/swift,benlangmuir/swift,aschwaighofer/swift,gregomni/swift,CodaFi/swift,allevato/swift,gregomni/swift,tkremenek/swift,harlanhaskins/swift,tkremenek/swift,parkera/swift,stephentyrone/swift,tkremenek/swift,jckarter/swift,jckarter/swift,hooman/swift,tkremenek/swift,glessard/swift,parkera/swift,benlangmuir/swift,jmgc/swift,xwu/swift,rudkx/swift,rudkx/swift,glessard/swift,jmgc/swift,parkera/swift,jmgc/swift,jckarter/swift,nathawes/swift,apple/swift,stephentyrone/swift,nathawes/swift,airspeedswift/swift,tkremenek/swift,harlanhaskins/swift,stephentyrone/swift,jckarter/swift,CodaFi/swift,atrick/swift,rudkx/swift,allevato/swift,stephentyrone/swift,ahoppen/swift,parkera/swift,airspeedswift/swift,benlangmuir/swift,glessard/swift,gregomni/swift,JGiola/swift,roambotics/swift,JGiola/swift,gregomni/swift,airspeedswift/swift,harlanhaskins/swift,aschwaighofer/swift,jmgc/swift,xwu/swift,hooman/swift,ahoppen/swift,parkera/swift,CodaFi/swift,harlanhaskins/swift,aschwaighofer/swift,apple/swift,CodaFi/swift,jmgc/swift,hooman/swift,roambotics/swift,hooman/swift,JGiola/swift,xwu/swift,JGiola/swift,allevato/swift,glessard/swift,glessard/swift,atrick/swift,JGiola/swift,xwu/swift,airspeedswift/swift,hooman/swift,JGiola/swift,atrick/swift,tkremenek/swift,allevato/swift,atrick/swift,nathawes/swift,rudkx/swift,xwu/swift,aschwaighofer/swift,ahoppen/swift,benlangmuir/swift,roambotics/swift,harlanhaskins/swift,hooman/swift,airspeedswift/swift,apple/swift,atrick/swift,allevato/swift,jckarter/swift,airspeedswift/swift,parkera/swift,benlangmuir/swift,parkera/swift,aschwaighofer/swift,stephentyrone/swift,harlanhaskins/swift,roambotics/swift,atrick/swift,stephentyrone/swift,jckarter/swift,roambotics/swift,rudkx/swift,gregomni/swift,rudkx/swift,jckarter/swift,CodaFi/swift,apple/swift,harlanhaskins/swift,apple/swift,glessard/swift,CodaFi/swift,ahoppen/swift,nathawes/swift,ahoppen/swift,aschwaighofer/swift,aschwaighofer/swift,ahoppen/swift,nathawes/swift,CodaFi/swift,airspeedswift/swift,allevato/swift