Remove unused field ProtectedPackages in the ComputerEngine

    private final CompilerStats mCompilerStats;

    private final BackgroundDexOptService mBackgroundDexOptService;

    private final PackageManagerInternal.ExternalSourcesPolicy mExternalSourcesPolicy;

    private final ProtectedPackages mProtectedPackages;

    // PackageManagerService attributes that are primitives are referenced through the

    // pms object directly.  Primitives are the only attributes so referenced.

        mCompilerStats = args.service.mCompilerStats;

        mBackgroundDexOptService = args.service.mBackgroundDexOptService;

        mExternalSourcesPolicy = args.service.mExternalSourcesPolicy;

        mProtectedPackages = args.service.mProtectedPackages;

        // Used to reference PMS attributes that are primitives and which are not

        // updated under control of the PMS lock.