Clean up some left-over code after moving functionality from swift-build to swift-package.
Clean up some left-over code after moving functionality from swift-build to swift-package.

mxcl/swift-package-manager,sschiau/swift-package-manager,sschiau/swift-package-manager,sschiau/swift-package-manager,JGiola/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,mxcl/swift-package-manager,abertelrud/swift-package-manager,mxcl/swift-package-manager,JGiola/swift-package-manager,abertelrud/swift-package-manager,JGiola/swift-package-manager,sschiau/swift-package-manager,apple/swift-package-manager,vmanot/swift-package-manager,abertelrud/swift-package-manager,haskellswift/swift-package-manager,sschiau/swift-package-manager,mxcl/swift-package-manager,vmanot/swift-package-manager,JGiola/swift-package-manager,haskellswift/swift-package-manager,vmanot/swift-package-manager,apple/swift-package-manager,vmanot/swift-package-manager,haskellswift/swift-package-manager,vmanot/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,haskellswift/swift-package-manager,abertelrud/swift-package-manager,JGiola/swift-package-manager