DSL: Delete unused DSL.swift
DSL: Delete unused DSL.swift

Quick/DSL.swift was removed from the Xcode project file in
e32aa85a6be130a7deca54f02460d18a4480f443.

DanielAsher/Quick,dgdosen/Quick,paulyoung/Quick,ArthurKK/Quick,pedrovereza/Quick,hanangellove/Quick,jahilliard/Quick,orta/Quick,pengleelove/Quick,paulyoung/Quick,github/Quick,jessesquires/Quick,dcaunt/Quick,fullstackclub/Quick,jasonchaffee/Quick,Quick/Quick,luzefeng/Quick,jahilliard/Quick,orta/Quick,NatashaTheRobot/Quick,paulyoung/Quick,zhakui/Quick,mrackwitz/Quick,fullstackclub/Quick,phatblat/Quick,marciok/Quick,jasonchaffee/Quick,jondwillis/Quick,wjszf/Quick,Sweefties/Quick,dcaunt/Quick,ikesyo/Quick,phatblat/Quick,mokagio/Quick,github/Quick,msdgwzhy6/Quick,mokagio/Quick,Sweefties/Quick,ashfurrow/Quick,phatblat/Quick,jeffh/Quick,Quick/Quick,jasonchaffee/Quick,romankl/Quick,nchatharoo/Quick,modocache/personal-fork-of-Quick,BlessNeo/Quick,msdgwzhy6/Quick,ichu501/Quick,modocache/personal-fork-of-Quick,ikesyo/Quick,BlessNeo/Quick,ikesyo/Quick,luzefeng/Quick,marciok/Quick,hwsyy/Quick,Quick/Quick,pengleelove/Quick,DanielAsher/Quick,DrewKiino/Quick,pcantrell/Quick,ichu501/Quick,mrackwitz/Quick,jessesquires/Quick,romankl/Quick,jeffh/Quick,hanangellove/Quick,dgdosen/Quick,zhakui/Quick,jeffh/Quick,cerberillo/Quick,mokagio/Quick,pcantrell/Quick,ArthurKK/Quick,cerberillo/Quick,Quick/Quick,ashfurrow/Quick,jondwillis/Quick,nchatharoo/Quick,pedrovereza/Quick,DrewKiino/Quick,NatashaTheRobot/Quick,wjszf/Quick,dgdosen/Quick,hwsyy/Quick,phatblat/Quick,marciok/Quick