Removing gitter as a chat option

Author: StanleyGoldman

README.md

@@ -6,7 +6,6 @@ You can reach the team right here by opening a [new issue](https://github.com/gi
 
 [![Build Status](https://ci.appveyor.com/api/projects/status/github/github-for-unity/Unity?branch=master&svg=true)](https://ci.appveyor.com/project/github-windows/unity)
 
-[![Join the chat at https://gitter.im/github-for-unity/Unity](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/github-for-unity/Unity?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Join the chat at https://discord.gg/5zH8hVx](https://img.shields.io/badge/discord-join%20chat-7289DA.svg)](https://discord.gg/5zH8hVx)
 [![GitHub for Unity live coding on Twitch](https://img.shields.io/badge/twitch-live%20coding-6441A4.svg)](https://www.twitch.tv/sh4na)