irule to remove all cookies

Something like this:

when HTTP_REQUEST {
    set request_cookies [HTTP::cookie names]
}
 
when HTTP_RESPONSE {
    foreach a_cookie $request_cookies {
        log local0. "Remove cookie: $a_cookie"
        HTTP::header insert Set-Cookie "$a_cookie=deleted;expires=Thu, 01-Jan-1970 00:00:10 GMT;path=/"
    }
}