Delete a Subscriber for a List using WSProxy / SSJS

delete-subscriber-from-list.js

<script runat="server">    
Platform.Load("core","1.1.1");

var subkey = "" //provide Sunscriber Key
var email = "" //provide Email Address
var prox = new Script.Util.WSProxy();
var sub = {
        SubscriberKey: subkey,
        EmailAddress: email,
        Lists: [{
            ID: "" //provide List ID
               }]
         };

var resp = prox.deleteItem("Subscriber", sub);

Write("Response: " + Stringify(resp));
</script>