remove warning

Author: doudz

README.md

@@ -3,8 +3,6 @@
 ![Build & Tests](https://github.com/zigpy/zigpy-zigate/workflows/Build%20&%20Tests/badge.svg?branch=master)
 [![Coverage](https://coveralls.io/repos/github/zigpy/zigpy-zigate/badge.svg?branch=master)](https://coveralls.io/github/zigpy/zigpy-zigate?branch=master)
 
-**WARNING: EXPERIMENTAL! This project is under development as WIP (work in progress). Developer’s work provided “AS IS”.**
-
 [zigpy-zigate](https://github.com/zigpy/zigpy-zigate) is a Python 3 implementation for the [Zigpy](https://github.com/zigpy/) project to implement [ZiGate](https://www.zigate.fr/) based [Zigbee](https://www.zigbee.org) radio devices.
 
 - https://github.com/zigpy/zigpy-zigate