rm push/pop

benches/actor_patterns.cm

@@ -27,13 +27,13 @@ function send(mailbox, msg) {
 function receive(mailbox) {
   if (length(mailbox.queue) == 0) return null
   mailbox.delivered++
-  return pop(mailbox.queue)
+  return mailbox.queue[]
 }
 
 function drain(mailbox) {
   var count = 0
   while (length(mailbox.queue) > 0) {
-    pop(mailbox.queue)
+    mailbox.queue[]
     count++
   }
   return count