Remove debugging changes.

chronos/asyncsync.nim

@@ -37,7 +37,7 @@ type
     ## state to be signaled, when event get fired, then all coroutines
     ## continue proceeds in order, they have entered waiting state.
     flag: bool
-    waiters*: seq[Future[void]]
+    waiters: seq[Future[void]]
 
   AsyncQueue*[T] = ref object of RootRef
     ## A queue, useful for coordinating producer and consumer coroutines.

chronos/transports/stream.nim

@@ -1639,7 +1639,9 @@ proc close*(server: StreamServer) =
   ## Please note that release of resources is not completed immediately, to be
   ## sure all resources got released please use ``await server.join()``.
   proc continuation(udata: pointer) {.gcsafe.} =
-    server.clean()
+    # Stop tracking server
+    if not(server.loopFuture.finished()):
+      server.clean()
 
   let r1 = (server.status == ServerStatus.Stopped) and
             not(isNil(server.function))