Remove unused utils.

tests/pubsub/utils.nim

@@ -207,18 +207,3 @@ proc waitSubGraph*(nodes: seq[PubSub], key: string) {.async.} =
 
     await sleepAsync(5.milliseconds)
     doAssert Moment.now() < timeout, "waitSubGraph timeout!"
-
-proc waitForMesh*(
-    sender: auto, receiver: auto, key: string, timeoutDuration = 5.seconds
-) {.async.} =
-  if sender == receiver:
-    return
-
-  let
-    timeoutMoment = Moment.now() + timeoutDuration
-    gossipsubSender = GossipSub(sender)
-    receiverPeerId = receiver.peerInfo.peerId
-
-  while not gossipsubSender.mesh.hasPeerId(key, receiverPeerId):
-    trace "waitForMesh sleeping..."
-    await activeWait(5.milliseconds, timeoutMoment, "waitForMesh timeout!")