Remove the duplicated install section, since Source/Channel are covered in the install guide (#2450)

Signed-off-by: Matthias Wessendorf <mwessend@redhat.com>

docs/eventing/samples/kafka/channel/README.md

@@ -2,24 +2,12 @@ You can install and configure the Apache Kafka CRD (`KafkaChannel`) as the defau
 
 ## Prerequisites
 
-You must ensure that you meet the [prerequisites listed in the Apache Kafka overview](../README.md).
-
-You must also have the following tools installed:
-- `curl`
-- `sed`
+- Ensure that you meet the [prerequisites listed in the Apache Kafka overview](../README.md).
+- A Kubernetes cluster with [Knative Kafka Channel installed](../../../../install/README.md).
 
 ## Creating a `KafkaChannel` channel CRD
 
-Install the `KafkaChannel` sub-component on your Knative Eventing cluster:
-   ```
-   curl -L "https://storage.googleapis.com/knative-releases/eventing-contrib/latest/kafka-channel.yaml" \
-    | sed 's/REPLACE_WITH_CLUSTER_URL/my-cluster-kafka-bootstrap.kafka:9092/' \
-    | kubectl apply --filename -
-   ```
-
-> Note: The above assumes that you have Apache Kafka installed in the `kafka`, as discussed [here](../README.md)!
-
-Once the `KafkaChannel` API is available, create a new object by configuring the YAML file as follows:
+Create a new object by configuring the YAML file as follows:
 
 ```
 cat <<-EOF | kubectl apply -f -
@@ -34,8 +22,6 @@ spec:
 EOF
 ```
 
-You can now set the `KafkaChannel` CRD as the default channel configuration.
-
 ## Specifying the default channel configuration
 
 To configure the usage of the `KafkaChannel` CRD as the 
@@ -69,7 +55,7 @@ Now that `KafkaChannel` is set as the default channel configuration, you can use
 ```
 cat <<-EOF | kubectl apply -f -
 ---
-apiVersion: messaging.knative.dev/v1alpha1
+apiVersion: messaging.knative.dev/v1beta1
 kind: Channel
 metadata:
   name: testchannel-one
@@ -126,7 +112,7 @@ To use the Apache Kafka based broker, let's take a look at a simple demo. Use th
     ```
 2. Install a source that publishes to the default broker
     ```
-    kubectl apply --filename 020-k8s-events.yaml
+    kubectl apply -f 020-k8s-events.yaml
     ```
 
 3. Create a trigger that routes the events to the `ksvc`:

docs/eventing/samples/kafka/source/README.md

@@ -2,33 +2,10 @@ Tutorial on how to build and deploy a `KafkaSource` [Eventing source](../../../s
 
 ## Prerequisites
 
-You must ensure that you meet the [prerequisites listed in the Apache Kafka overview](../README.md).
+- Ensure that you meet the [prerequisites listed in the Apache Kafka overview](../README.md).
+- A Kubernetes cluster with [Knative Kafka Source installed](../../../../install/README.md).
 
-## Creating a `KafkaSource` source CRD
-
-1. Install the `KafkaSource` sub-component to your Knative cluster:
-
-   ```
-   kubectl apply -f https://storage.googleapis.com/knative-releases/eventing-contrib/latest/kafka-source.yaml
-
-   ```
-
-2. Check that the `kafka-controller-manager-0` pod is running.
-   ```
-   kubectl get pods --namespace knative-sources
-   NAME                         READY     STATUS    RESTARTS   AGE
-   kafka-controller-manager-0   1/1       Running   0          42m
-   ```
-3. Check the `kafka-controller-manager-0` pod logs.
-   ```
-   $ kubectl logs kafka-controller-manager-0 -n knative-sources
-   2019/03/19 22:25:54 Registering Components.
-   2019/03/19 22:25:54 Setting up Controller.
-   2019/03/19 22:25:54 Adding the Apache Kafka Source controller.
-   2019/03/19 22:25:54 Starting Apache Kafka controller.
-   ```
-
-### Apache Kafka Topic (Optional)
+## Apache Kafka Topic (Optional)
 
 1. If using Strimzi, you can set a topic modifying `source/kafka-topic.yaml`
    with your desired:
@@ -69,7 +46,7 @@ You must ensure that you meet the [prerequisites listed in the Apache Kafka over
    knative-demo-topic   16s
    ```
 
-### Create the Event Display service
+## Create the Event Display service
 
 1. Download a copy of the code:
 
@@ -112,7 +89,7 @@ You must ensure that you meet the [prerequisites listed in the Apache Kafka over
    ...
    ```
 
-#### Apache Kafka Event Source
+### Apache Kafka Event Source
 
 1. Modify `source/event-source.yaml` accordingly with bootstrap servers, topics,
    etc...:
@@ -322,4 +299,3 @@ KafkaSource expects these files to be in pem format, if it is in other format li
        kind: Service
        name: event-display
    ```
-