Remove untidy caution note from tutorial

The caution note was warning user about having Ingress Controller configured as prerequisite, but this is exactly what the tutorial is explaining.

Signed-off-by: Davi Garcia <[email protected]>

Author: Davi Garcia

content/en/docs/tasks/access-application-cluster/ingress-minikube.md

@@ -7,11 +7,7 @@ weight: 100
 {{% capture overview %}}
 
 An [Ingress](/docs/concepts/services-networking/ingress/) is an API object that defines rules which allow external access 
-to services in a cluster. An [Ingress controller](/docs/concepts/services-networking/ingress-controllers/) fulfills the rules set in the Ingress. 
-
-{{< caution >}}
-For the Ingress resource to work, the cluster **must** also have an Ingress controller running.
-{{< /caution >}}
+to services in a cluster. An [Ingress controller](/docs/concepts/services-networking/ingress-controllers/) fulfills the rules set in the Ingress.
 
 This page shows you how to set up a simple Ingress which routes requests to Service web or web2 depending on the HTTP URI.