Remove coverage badge as tester does not do coverage

Author: Richard Quadling

README.md

@@ -1,7 +1,6 @@
 # Symfony console autocomplete
 
 [![Build Status](https://img.shields.io/travis/bamarni/symfony-console-autocomplete.svg?style=for-the-badge&logo=travis)](https://travis-ci.org/bamarni/symfony-console-autocomplete)
-[![Code Coverage](https://img.shields.io/scrutinizer/coverage/g/bamarni/symfony-console-autocomplete.svg?style=for-the-badge&logo=scrutinizer)](https://scrutinizer-ci.com/g/bamarni/symfony-console-autocomplete/)
 [![GitHub issues](https://img.shields.io/github/issues/bamarni/symfony-console-autocomplete.svg?style=for-the-badge&logo=github)](https://github.com/bamarni/symfony-console-autocomplete/issues)
 
 [![PHP Version](https://img.shields.io/packagist/php-v/bamarni/symfony-console-autocomplete.svg?style=for-the-badge)](https://github.com/bamarni/symfony-console-autocomplete)