[VOL-3233] Remove port capability reference

The port capability message is no longer needed along and the Core
will no longer request port capability separately.  It will all be
included in the port create message from adapters.

This change is needed such that the adapters can use the latest
proto definitions.

Change-Id: I4661b98d9c99991122723058e8a764a32084bc65
diff --git a/go.mod b/go.mod
index 6c61088..aeda12c 100644
--- a/go.mod
+++ b/go.mod
@@ -28,7 +28,7 @@
 	github.com/hashicorp/serf v0.8.4 // indirect
 	github.com/jcmturner/gofork v1.0.0 // indirect
 	github.com/onsi/gomega v1.4.2 // indirect
-	github.com/opencord/voltha-protos/v3 v3.3.3
+	github.com/opencord/voltha-protos/v3 v3.3.9
 	github.com/opentracing/opentracing-go v1.1.0
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/pierrec/lz4 v2.3.0+incompatible // indirect