Remove note from operator installation doc

Author: pleshakov

docs/content/installation/installation-with-operator.md

@@ -7,8 +7,6 @@ doctypes: [""]
 toc: true
 ---
 
-
-**Note: an NGINX Ingress Operator version compatible with the 2.1.0 NGINX Ingress Controller release is not available yet. We will update this document and remove this note once we publish a compatible Operator version.**
 This document describes how to install the NGINX Ingress Controller in your Kubernetes cluster using the NGINX Ingress Operator.
 
 ## Prerequisites