[Code completion] Delete redundant code handling declarations.
[Code completion] Delete redundant code handling declarations.

A significant chunk of the handling for LookupKind::ValueExpr
was duplicated in the handling for the ValueInDeclContext and
ImportFromModule cases. Use a fall through to unify the
code paths here.

practicalswift/swift,airspeedswift/swift,jckarter/swift,alblue/swift,sschiau/swift,harlanhaskins/swift,aschwaighofer/swift,shajrawi/swift,gribozavr/swift,gribozavr/swift,alblue/swift,harlanhaskins/swift,austinzheng/swift,shajrawi/swift,tkremenek/swift,CodaFi/swift,stephentyrone/swift,sschiau/swift,xedin/swift,practicalswift/swift,lorentey/swift,benlangmuir/swift,xedin/swift,parkera/swift,karwa/swift,natecook1000/swift,danielmartin/swift,harlanhaskins/swift,harlanhaskins/swift,natecook1000/swift,xwu/swift,aschwaighofer/swift,devincoughlin/swift,xwu/swift,xedin/swift,stephentyrone/swift,lorentey/swift,CodaFi/swift,glessard/swift,shahmishal/swift,ahoppen/swift,jmgc/swift,JGiola/swift,amraboelela/swift,devincoughlin/swift,karwa/swift,natecook1000/swift,JGiola/swift,allevato/swift,roambotics/swift,gribozavr/swift,jmgc/swift,stephentyrone/swift,gregomni/swift,parkera/swift,stephentyrone/swift,amraboelela/swift,hooman/swift,karwa/swift,tkremenek/swift,xwu/swift,xedin/swift,ahoppen/swift,tkremenek/swift,apple/swift,natecook1000/swift,devincoughlin/swift,jmgc/swift,jmgc/swift,karwa/swift,glessard/swift,lorentey/swift,sschiau/swift,karwa/swift,nathawes/swift,rudkx/swift,xedin/swift,roambotics/swift,practicalswift/swift,brentdax/swift,hooman/swift,alblue/swift,rudkx/swift,devincoughlin/swift,jmgc/swift,airspeedswift/swift,xwu/swift,gribozavr/swift,aschwaighofer/swift,danielmartin/swift,lorentey/swift,sschiau/swift,nathawes/swift,allevato/swift,devincoughlin/swift,glessard/swift,roambotics/swift,atrick/swift,ahoppen/swift,practicalswift/swift,allevato/swift,jmgc/swift,apple/swift,shahmishal/swift,brentdax/swift,hooman/swift,allevato/swift,stephentyrone/swift,hooman/swift,shahmishal/swift,austinzheng/swift,austinzheng/swift,airspeedswift/swift,lorentey/swift,JGiola/swift,roambotics/swift,hooman/swift,danielmartin/swift,JGiola/swift,xedin/swift,ahoppen/swift,lorentey/swift,CodaFi/swift,danielmartin/swift,gregomni/swift,nathawes/swift,shajrawi/swift,karwa/swift,glessard/swift,harlanhaskins/swift,gregomni/swift,lorentey/swift,sschiau/swift,allevato/swift,atrick/swift,parkera/swift,sschiau/swift,JGiola/swift,roambotics/swift,jmgc/swift,sschiau/swift,xedin/swift,gregomni/swift,rudkx/swift,nathawes/swift,shahmishal/swift,gribozavr/swift,practicalswift/swift,benlangmuir/swift,benlangmuir/swift,austinzheng/swift,sschiau/swift,apple/swift,amraboelela/swift,karwa/swift,CodaFi/swift,rudkx/swift,jckarter/swift,alblue/swift,glessard/swift,ahoppen/swift,allevato/swift,karwa/swift,CodaFi/swift,devincoughlin/swift,amraboelela/swift,parkera/swift,aschwaighofer/swift,danielmartin/swift,atrick/swift,harlanhaskins/swift,shajrawi/swift,jckarter/swift,atrick/swift,CodaFi/swift,xwu/swift,aschwaighofer/swift,alblue/swift,practicalswift/swift,amraboelela/swift,gribozavr/swift,rudkx/swift,harlanhaskins/swift,tkremenek/swift,parkera/swift,natecook1000/swift,brentdax/swift,austinzheng/swift,roambotics/swift,CodaFi/swift,aschwaighofer/swift,alblue/swift,benlangmuir/swift,practicalswift/swift,parkera/swift,nathawes/swift,jckarter/swift,apple/swift,shahmishal/swift,shajrawi/swift,parkera/swift,glessard/swift,nathawes/swift,amraboelela/swift,benlangmuir/swift,xedin/swift,stephentyrone/swift,gregomni/swift,airspeedswift/swift,gribozavr/swift,jckarter/swift,xwu/swift,danielmartin/swift,parkera/swift,brentdax/swift,tkremenek/swift,hooman/swift,alblue/swift,gregomni/swift,ahoppen/swift,airspeedswift/swift,tkremenek/swift,gribozavr/swift,devincoughlin/swift,tkremenek/swift,aschwaighofer/swift,atrick/swift,benlangmuir/swift,shajrawi/swift,jckarter/swift,jckarter/swift,xwu/swift,brentdax/swift,allevato/swift,devincoughlin/swift,JGiola/swift,austinzheng/swift,shahmishal/swift,stephentyrone/swift,apple/swift,amraboelela/swift,natecook1000/swift,shajrawi/swift,lorentey/swift,rudkx/swift,hooman/swift,austinzheng/swift,shahmishal/swift,brentdax/swift,danielmartin/swift,shajrawi/swift,apple/swift,brentdax/swift,nathawes/swift,airspeedswift/swift,atrick/swift,practicalswift/swift,natecook1000/swift,airspeedswift/swift,shahmishal/swift