Remove unused code.

        return execute(builder.toString());

    }

    /**

     * Clone all the package data directories from srcUserId to targetUserId. If copyData is true,

     * some of the data is also copied, otherwise just empty directories are created with the

     * correct access rights.

     * @param srcUserId user to copy the data directories from

     * @param targetUserId user to copy the data directories to

     * @param copyData whether the data itself is to be copied. If false, empty directories are

     * created.

     * @return success/error code

     */

    public int cloneUserData(int srcUserId, int targetUserId, boolean copyData) {

        StringBuilder builder = new StringBuilder("cloneuserdata");

        builder.append(' ');

        builder.append(srcUserId);

        builder.append(' ');

        builder.append(targetUserId);

        builder.append(' ');

        builder.append(copyData ? '1' : '0');

        return execute(builder.toString());

    }

    public boolean ping() {

        if (execute("ping") < 0) {

            return false;