Update README.md [skip ci]

Remove Gitter chat link - not really being used.

Author: theogravity

README.md

@@ -2,7 +2,6 @@
 
 [![NPM version](https://img.shields.io/npm/v/sqlite.svg?style=flat-square)](https://www.npmjs.com/package/sqlite)
 [![CircleCI](https://circleci.com/gh/kriasoft/node-sqlite.svg?style=svg)](https://circleci.com/gh/kriasoft/node-sqlite) 
-[![Online Chat](https://img.shields.io/badge/chat-%23node--sqlite_on_Gitter-blue.svg?style=flat-square)](https://gitter.im/kriasoft/node-sqlite)
 ![built with typescript](https://camo.githubusercontent.com/92e9f7b1209bab9e3e9cd8cdf62f072a624da461/68747470733a2f2f666c61742e62616467656e2e6e65742f62616467652f4275696c74253230576974682f547970655363726970742f626c7565) 
 [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)