remove global

tests/kill.ce

@@ -1,14 +1,14 @@
-$_.start(e => {
+$start(e => {
   log.console(`got message from hanger: ${e.type}`)
   if (e.type == 'greet')
-    $_.delay(_ => {
+    $delay(_ => {
       log.console(`sending stop message to hanger`)
-      $_.stop(e.actor)
+      $stop(e.actor)
     }, 1)
     
   if (e.type == 'disrupt') {
     log.console(`underling successfully killed.`)
-    send($_.parent, { type: "test_result", passed: true })
-    $_.stop()
+    send($parent, { type: "test_result", passed: true })
+    $stop()
   }
 }, 'tests/hang_actor')