Remove invalid badge

Author: gmponos

README.md

@@ -4,7 +4,6 @@
 [![Total Downloads](https://img.shields.io/packagist/dt/gmponos/guzzle_logger.svg)](https://packagist.org/packages/gmponos/guzzle_logger)
 [![Build Status](https://travis-ci.org/gmponos/guzzle-log-middleware.svg?branch=master)](https://travis-ci.org/gmponos/guzzle-log-middleware)
 [![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/gmponos/monolog-slack/blob/master/LICENSE.md)
-[![PHPPackages Rank](http://phppackages.org/p/gmponos/guzzle_logger/badge/rank.svg)](http://phppackages.org/p/gmponos/guzzle_logger)
 
 This is a middleware for [guzzle](https://github.com/guzzle/guzzle) that will help you automatically log every request 
 and response using a PSR-3 logger.