message: When closing remote context, look for context_id in enqueue_dispatchers_ only if streaming is enabled.
diff: @@ -75,7 +75,7 @@ class GrpcEagerClient : public EagerClient {
  if (it != enqueue_dispatchers_.end()) {
  it->second.CancelCall();
  enqueue_dispatchers_.erase(request->context_id());
  - } else {
  + } else if (EnableStreaming()) {
  LOG(ERROR) << "Remote EagerContext with id " << request->context_id()
  << " does not seem to exist.";
  }
  