Remove dead code in PrivateDnsConfiguration

No functionality changes.

Bug: 186177613
Test: None, just remove some dead code
Change-Id: I1676de854997ee984ef7395974ae64c3f9b685ab
diff --git a/DnsTlsDispatcher.cpp b/DnsTlsDispatcher.cpp
index 45aca20..d14fdeb 100644
--- a/DnsTlsDispatcher.cpp
+++ b/DnsTlsDispatcher.cpp
@@ -242,8 +242,7 @@
 
     const auto status = res.wait_for(xport.timeout());
     if (status == std::future_status::timeout) {
-        // TODO: notify the Transport to remove the query because no queries will await this future.
-        // b/186613628.
+        // TODO(b/186613628): notify the Transport to remove this query.
         LOG(WARNING) << "DoT query timed out after " << xport.timeout().count() << " ms";
         return DnsTlsTransport::Result{
                 .code = DnsTlsTransport::Response::network_error,