Docs: Removed gitter channel.

README.md

@@ -1,7 +1,6 @@
 CKEditor 5 inspector
 =====================================
 
-[![Join the chat at https://gitter.im/ckeditor/ckeditor5](https://badges.gitter.im/ckeditor/ckeditor5.svg)](https://gitter.im/ckeditor/ckeditor5?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![npm version](https://badge.fury.io/js/%40ckeditor%2Fckeditor5-inspector.svg)](https://www.npmjs.com/package/@ckeditor/ckeditor5-inspector)
 [![Build Status](https://travis-ci.org/ckeditor/ckeditor5-inspector.svg?branch=master)](https://travis-ci.org/ckeditor/ckeditor5-inspector)
 [![Coverage Status](https://coveralls.io/repos/github/ckeditor/ckeditor5-inspector/badge.svg?branch=master)](https://coveralls.io/github/ckeditor/ckeditor5-inspector?branch=master)