Revert "[test] disable a flaky test test/Driver/opt-remark.swift. rdar://42247881"
Revert "[test] disable a flaky test test/Driver/opt-remark.swift. rdar://42247881"

stephentyrone/swift,jckarter/swift,gregomni/swift,hooman/swift,xwu/swift,JGiola/swift,atrick/swift,JGiola/swift,tkremenek/swift,sschiau/swift,sschiau/swift,JGiola/swift,xwu/swift,allevato/swift,parkera/swift,practicalswift/swift,parkera/swift,amraboelela/swift,austinzheng/swift,aschwaighofer/swift,xedin/swift,karwa/swift,harlanhaskins/swift,karwa/swift,benlangmuir/swift,airspeedswift/swift,apple/swift,danielmartin/swift,lorentey/swift,xwu/swift,glessard/swift,atrick/swift,shahmishal/swift,rudkx/swift,lorentey/swift,danielmartin/swift,danielmartin/swift,JGiola/swift,roambotics/swift,devincoughlin/swift,shajrawi/swift,stephentyrone/swift,allevato/swift,alblue/swift,shahmishal/swift,nathawes/swift,austinzheng/swift,xedin/swift,lorentey/swift,apple/swift,airspeedswift/swift,benlangmuir/swift,nathawes/swift,tkremenek/swift,airspeedswift/swift,jckarter/swift,gribozavr/swift,parkera/swift,atrick/swift,xedin/swift,roambotics/swift,parkera/swift,gribozavr/swift,amraboelela/swift,shajrawi/swift,shajrawi/swift,shajrawi/swift,tkremenek/swift,stephentyrone/swift,CodaFi/swift,CodaFi/swift,devincoughlin/swift,allevato/swift,shahmishal/swift,ahoppen/swift,practicalswift/swift,austinzheng/swift,CodaFi/swift,tkremenek/swift,harlanhaskins/swift,ahoppen/swift,karwa/swift,austinzheng/swift,karwa/swift,lorentey/swift,airspeedswift/swift,xedin/swift,xwu/swift,parkera/swift,apple/swift,apple/swift,atrick/swift,jmgc/swift,rudkx/swift,xwu/swift,sschiau/swift,nathawes/swift,rudkx/swift,shahmishal/swift,sschiau/swift,roambotics/swift,practicalswift/swift,amraboelela/swift,aschwaighofer/swift,allevato/swift,parkera/swift,gregomni/swift,harlanhaskins/swift,shajrawi/swift,gribozavr/swift,glessard/swift,karwa/swift,alblue/swift,harlanhaskins/swift,hooman/swift,parkera/swift,jmgc/swift,xedin/swift,hooman/swift,gribozavr/swift,airspeedswift/swift,benlangmuir/swift,austinzheng/swift,karwa/swift,gribozavr/swift,practicalswift/swift,CodaFi/swift,harlanhaskins/swift,devincoughlin/swift,sschiau/swift,jmgc/swift,atrick/swift,jckarter/swift,apple/swift,karwa/swift,roambotics/swift,atrick/swift,amraboelela/swift,stephentyrone/swift,austinzheng/swift,danielmartin/swift,amraboelela/swift,sschiau/swift,karwa/swift,practicalswift/swift,danielmartin/swift,shahmishal/swift,gregomni/swift,aschwaighofer/swift,xedin/swift,gregomni/swift,roambotics/swift,stephentyrone/swift,gribozavr/swift,shahmishal/swift,hooman/swift,austinzheng/swift,amraboelela/swift,hooman/swift,alblue/swift,CodaFi/swift,nathawes/swift,airspeedswift/swift,aschwaighofer/swift,devincoughlin/swift,JGiola/swift,jmgc/swift,jckarter/swift,harlanhaskins/swift,xedin/swift,CodaFi/swift,danielmartin/swift,devincoughlin/swift,ahoppen/swift,alblue/swift,glessard/swift,allevato/swift,shajrawi/swift,lorentey/swift,ahoppen/swift,rudkx/swift,hooman/swift,shajrawi/swift,shahmishal/swift,tkremenek/swift,practicalswift/swift,amraboelela/swift,ahoppen/swift,tkremenek/swift,allevato/swift,glessard/swift,airspeedswift/swift,xwu/swift,devincoughlin/swift,alblue/swift,hooman/swift,shajrawi/swift,sschiau/swift,jckarter/swift,rudkx/swift,parkera/swift,lorentey/swift,rudkx/swift,jckarter/swift,tkremenek/swift,apple/swift,stephentyrone/swift,glessard/swift,nathawes/swift,shahmishal/swift,gribozavr/swift,CodaFi/swift,aschwaighofer/swift,practicalswift/swift,gregomni/swift,roambotics/swift,ahoppen/swift,xedin/swift,gregomni/swift,aschwaighofer/swift,gribozavr/swift,jmgc/swift,harlanhaskins/swift,JGiola/swift,devincoughlin/swift,stephentyrone/swift,lorentey/swift,nathawes/swift,devincoughlin/swift,sschiau/swift,benlangmuir/swift,alblue/swift,alblue/swift,benlangmuir/swift,nathawes/swift,xwu/swift,jmgc/swift,allevato/swift,danielmartin/swift,jckarter/swift,lorentey/swift,benlangmuir/swift,practicalswift/swift,glessard/swift,aschwaighofer/swift,jmgc/swift