Update README.md (#115)

Author: korniltsev

godeltaprof/README.md

@@ -91,8 +91,11 @@ CPU profiles: [BenchmarkOG](https://flamegraph.com/share/a8f68312-98c7-11ee-a502
 
 # upstreaming
 
-TODO(korniltsev): create golang issue and ask if godeltaprof is something that could be considered merging to upstream golang repo
-in some way(maybe not as is, maybe with different APIs)
+In the perfect world, this functionality exists in golang runtime/stdlib and we don't need godeltaprof library at all.
+
+See golang proposals:
+https://github.com/golang/go/issues/57765
+https://github.com/golang/go/issues/67942