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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _server_rollback():
 """Removes script database and archive files to rollback the CI server installation. """

    #Remove the data and archive files specified in settings. The cron
    #gets remove by the _setup_server() script if -rollback is specified.
    from os import path, remove
    archpath = path.abspath(path.expanduser(settings.archfile))
    if path.isfile(archpath) and not args["nolive"]:
        vms("Removing archive JSON file at {}.".format(archpath))
        remove(archpath)
    datapath = path.abspath(path.expanduser(settings.datafile))
    if path.isfile(datapath) and not args["nolive"]:
        vms("Removing script database JSON file at {}".format(datapath))
        remove(datapath)