chore: remove Code Climate link and configuration

.gitattributes

@@ -1,4 +1,3 @@
-.codeclimate.yml      export-ignore
 .codecov.yml          export-ignore
 .editorconfig         export-ignore
 .gitattributes        export-ignore

README.md

@@ -8,12 +8,9 @@
     <a href="https://github.com/ramsey/composer-repl"><img src="http://img.shields.io/badge/source-ramsey/composer--repl-blue.svg?style=flat-square" alt="Source Code"></a>
     <a href="https://packagist.org/packages/ramsey/composer-repl"><img src="https://img.shields.io/packagist/v/ramsey/composer-repl.svg?style=flat-square&label=release" alt="Download Package"></a>
     <a href="https://php.net"><img src="https://img.shields.io/packagist/php-v/ramsey/composer-repl.svg?style=flat-square&colorB=%238892BF" alt="PHP Programming Language"></a>
-    <br>
     <a href="https://github.com/ramsey/composer-repl/actions?query=workflow%3Amain"><img src="https://img.shields.io/github/workflow/status/ramsey/composer-repl/main?logo=github&style=flat-square" alt="Build Status"></a>
     <a href="https://codecov.io/gh/ramsey/composer-repl"><img src="https://img.shields.io/codecov/c/gh/ramsey/composer-repl?label=codecov&logo=codecov&style=flat-square" alt="Codecov Code Coverage"></a>
     <a href="https://shepherd.dev/github/ramsey/composer-repl"><img src="https://img.shields.io/endpoint?style=flat-square&url=https%3A%2F%2Fshepherd.dev%2Fgithub%2Framsey%2Fcomposer-repl%2Fcoverage" alt="Psalm Type Coverage"></a>
-    <a href="https://codeclimate.com/github/ramsey/composer-repl"><img src="https://img.shields.io/codeclimate/coverage-letter/ramsey/composer-repl?label=maintainability&logo=Code%20Climate&style=flat-square" alt="Maintainability"></a>
-    <br>
     <a href="https://github.com/ramsey/composer-repl/blob/master/LICENSE"><img src="https://img.shields.io/packagist/l/ramsey/composer-repl.svg?style=flat-square&colorB=darkcyan" alt="Read License"></a>
     <a href="https://packagist.org/packages/ramsey/composer-repl/stats"><img src="https://img.shields.io/packagist/dt/ramsey/composer-repl.svg?style=flat-square&colorB=darkmagenta" alt="Package downloads on Packagist"></a>
     <a href="https://phpc.chat/channel/ramsey"><img src="https://img.shields.io/badge/phpc.chat-%23ramsey-darkslateblue?style=flat-square" alt="Chat with the maintainers"></a>