🔥 Remove npm dependencies badge

Because it's broken most of the time

Author: apertureless

README.md

@@ -3,7 +3,6 @@
 </div>
 
 [![npm version](https://badge.fury.io/js/vue-chartjs.svg)](https://badge.fury.io/js/vue-chartjs)
-![npm dependencies](https://david-dm.org/apertureless/vue-chartjs.svg)
 [![codecov](https://codecov.io/gh/apertureless/vue-chartjs/branch/master/graph/badge.svg)](https://codecov.io/gh/apertureless/vue-chartjs)
 [![Build Status](https://travis-ci.org/apertureless/vue-chartjs.svg?branch=master)](https://travis-ci.org/apertureless/vue-chartjs)
 [![Package Quality](http://npm.packagequality.com/shield/vue-chartjs.svg)](http://packagequality.com/#?package=vue-chartjs)