Remove broken testing link

docs/README.md

@@ -57,7 +57,6 @@ provided as additional layers:
 * [How to build](https://docs.onosproject.org/onos-config/docs/build/) onos-config server, related commands and Docker image
 * [How to run](https://docs.onosproject.org/onos-config/docs/run/) onos-config server and related commands
 * [How to deploy](https://docs.onosproject.org/onos-config/docs/deployment/) onos-config in a Kubernetes cluster
-* [How to test](https://docs.onosproject.org/onos-test/docs/testing/) onos-config integration tests with onit
 * [How to onboard your device](https://docs.onosproject.org/onos-config/docs/modelplugin/) extending onos-config with Model Plugins
 * [Developer workflow summary](https://docs.onosproject.org/developers/dev_workflow/) for onos-config project
 * [Contacts and Meetings](https://docs.onosproject.org/developers/community-info/) for onos-config project