Remove broken shield

Author: JimmyW2

README.md

@@ -2,7 +2,6 @@
 
 [![npm status](http://img.shields.io/npm/v/cleverbot.io.svg)](https://www.npmjs.org/package/cleverbot.io)
 [![build status](https://secure.travis-ci.org/CleverbotIO/node-cleverbot.io.svg)](http://travis-ci.org/CleverbotIO/node-cleverbot.io)
-[![dependency status](https://david-dm.org/CleverbotIO/node-cleverbot.io.svg)](https://david-dm.org/CleverbotIO/node-cleverbot.io)
 [![Slack Status](https://slack.cleverbot.io/badge.svg)](https://slack.cleverbot.io)
 
 ### Installation