def scrub_response(response):
    """
    Drop irrelevant headers.
    """
    headers = response["headers"]
    for header in [
        "CF-Cache-Status",
        "CF-RAY",
        "Cache-Control",
        "Connection",
        "Date",
        "Expect-CT",
        "NEL",
        "Report-To",
        "Server",
        "Transfer-Encoding",
        "cf-request-id",
        "Set-Cookie",
    ]:
        headers.pop(header, None)
    return response