README: remove duplicate use case paragraph

Just happened to come across this repo and notice the duplication

Author: DanielEScherzer

README.md

@@ -4,7 +4,7 @@ Quickly terminate an HTTP request with a `404 Not Found` response for static res
 
 [![Latest Stable Version](https://poser.pugx.org/phpwatch/fast404/v)](https://packagist.org/packages/phpwatch/fast404) ![CI](https://github.com/PHPWatch/Fast404/workflows/CI/badge.svg?branch=master) [![Total Downloads](https://poser.pugx.org/phpwatch/fast404/downloads)](https://packagist.org/packages/phpwatch/fast404) [![License](https://poser.pugx.org/phpwatch/fast404/license)](https://github/phpwatch/fast404)
 
-`phpwatch/fast404` is a library/middleware that you can to quickly terminate an HTTP request with a `404 Not Found` response. The use case is a framework that handles all HTTP requests via a router, and returning a quick 404 message to static resources such as `.jpg` or `.png`. This prevents the framework from initializing rendering engines, database connections, etc to serve these types of requests.
+`phpwatch/fast404` is a library/middleware that you can to quickly terminate an HTTP request with a `404 Not Found` response.
 
 The use case is a framework that handles all HTTP requests via a router, and returning a quick 404 message to static resources such as `.jpg` or `.png`. This prevents the framework from initializing rendering engines, database connections, etc to serve these types of requests.