Remove note about Gloo incompatibility with Eventing (#1345)

Eventing now uses standard Kubernetes Services, so it should be compatible
with Gloo and Istio.

Author: grantr

docs/install/Knative-with-AKS.md

@@ -134,7 +134,6 @@ recommended configuration for a cluster is:
 ## Installing Istio
 
 > Note: [Gloo](https://gloo.solo.io/) is available as an alternative to Istio.
-> Gloo is not currently compatible with the Knative Eventing component.
 > [Click here](./Knative-with-Gloo.md) to install Knative with Gloo.
 
 Knative depends on Istio. If your cloud platform offers a managed Istio

docs/install/Knative-with-Minikube.md

@@ -59,7 +59,6 @@ minikube start --memory=8192 --cpus=6 \
 ## Installing Istio
 
 > Note: [Gloo](https://gloo.solo.io/) is available as an alternative to Istio.
-> Gloo is not currently compatible with the Knative Eventing component.
 > [Click here](./Knative-with-Gloo.md) to install Knative with Gloo.
 
 Knative depends on Istio. Run the following to install Istio. (We are changing

docs/install/Knative-with-OpenShift.md

@@ -106,7 +106,6 @@ oc label namespace default istio-injection=enabled
 ## Installing Istio
 
 > Note: [Gloo](https://gloo.solo.io/) is available as an alternative to Istio.
-> Gloo is not currently compatible with the Knative Eventing component.
 > [Click here](./Knative-with-Gloo.md) to install Knative with Gloo.
 
 Knative depends on Istio. First, run the following to grant the necessary