remove dependency on github.com/census-instrumentation/opencensus-proto

[codyoss]

Open Census is now deprecated and the project mentioned archive has been archived for over a year. I have seen some dependency issues popping up in the go/proto/grpc space and have traced it back to this dependency having a really old refs on google.golang.org/genproto in this repo. Is there a plan to remove this dependency from the tree? As another issue pointed out, which I have linked below, this can also pose a security risk to depend upon projects that are not getting updated.

Previous issue that was autoclosed: #952

[kyessenov]

We cannot remove it until OpenCensus is deleted in Envoy core extensions. How does this cause issue for genproto? It's just another proto?

[codyoss]

@kyessenov it is related to the issue linked above. TLDR is we did a module split to limit the dependencies pulled into some projects that depend on genproto. But this can cause an ambiguous import if you have a really old ref to genproto these days -- such as demonstrated in this open census project.

We cannot remove it until OpenCensus is deleted in Envoy core extensions.

Is this planned work, and is there an issue we can follow?

[kyessenov]

envoyproxy/envoy#9958 is the issue tracking the replacement.