rm dep & dev-dep badges (for now)

- until we bump d3 to 4.0.0
- until mapbox-gl reaches 1.0.0

Author: etpinard

README.md

@@ -1,10 +1,7 @@
 <a href="https://plot.ly/javascript/"><img src="http://images.plot.ly/logo/[email protected]" height="70"></a>
 
 [![npm version](https://badge.fury.io/js/plotly.js.svg)](https://badge.fury.io/js/plotly.js)
-
 [![circle ci](https://circleci.com/gh/plotly/plotly.js.png?&style=shield&circle-token=1f42a03b242bd969756fc3e53ede204af9b507c0)](https://circleci.com/gh/plotly/plotly.js)
-[![Dependency Status](https://david-dm.org/plotly/plotly.js.svg?style=flat-square)](https://david-dm.org/plotly/plotly.js)
-[![devDependency Status](https://david-dm.org/plotly/plotly.js/dev-status.svg?style=flat-square)](https://david-dm.org/plotly/plotly.js#info=devDependencies)
 
 Built on top of [d3.js](http://d3js.org/) and [stack.gl](http://stack.gl/),
 plotly.js is a high-level, declarative charting library. plotly.js ships with 20