Remove broken CodeClimate badge

Claims "not found" in the badge currently, even though following the
link works. Also, the informatioal value of it to someone visiting the
repo isn't too great.

Author: Sebastian Kippe

README.md

@@ -4,7 +4,6 @@
 [![Build Status](http://img.shields.io/travis/remotestorage/remotestorage.js.svg?style=flat)](http://travis-ci.org/remotestorage/remotestorage.js)
 [![Dependency Status](http://img.shields.io/david/remotestorage/remotestorage.js.svg?style=flat)](https://david-dm.org/remotestorage/remotestorage.js#info=dependencies)
 [![devDependency Status](http://img.shields.io/david/dev/remotestorage/remotestorage.js.svg?style=flat)](https://david-dm.org/remotestorage/remotestorage.js#info=devDependencies)
-[![Code Climate](http://img.shields.io/codeclimate/github/remotestorage/remotestorage.js.svg?style=flat)](https://codeclimate.com/github/remotestorage/remotestorage.js)
 
 remoteStorage.js is a JavaScript library for storing user data locally in the
 browser, as well as connecting to [remoteStorage](http://remotestorage.io)