[SRVKS-1061] Update readiness/liveness default availability

Author: ochromy

eventing/tuning/overriding-config-eventing.adoc

@@ -16,11 +16,6 @@ The `replicas` spec cannot override the number of replicas for deployments that
 [NOTE]
 ====
 You can only override probes that are defined in the deployment by default.
-
-All Knative Serving deployments define a readiness and a liveness probe by default, with these exceptions:
-
-* `net-kourier-controller` and `3scale-kourier-gateway` only define a readiness probe.
-* `net-istio-controller` and `net-istio-webhook` define no probes.
 ====
 
 include::modules/knative-eventing-CR-system-deployments.adoc[leveloffset=+1]