Update sponsors of components v6.1

Author: nicolas-grekas

README.md

@@ -4,16 +4,6 @@ HttpFoundation Component
 The HttpFoundation component defines an object-oriented layer for the HTTP
 specification.
 
-Sponsor
--------
-
-The HttpFoundation component for Symfony 5.4/6.0 is [backed][1] by [Laravel][2].
-
-Laravel is a PHP web development framework that is passionate about maximum developer
-happiness. Laravel is built using a variety of bespoke and Symfony based components.
-
-Help Symfony by [sponsoring][3] its development!
-
 Resources
 ---------
 
@@ -22,7 +12,3 @@ Resources
  * [Report issues](https://github.com/symfony/symfony/issues) and
    [send Pull Requests](https://github.com/symfony/symfony/pulls)
    in the [main Symfony repository](https://github.com/symfony/symfony)
-
-[1]: https://symfony.com/backers
-[2]: https://laravel.com/
-[3]: https://symfony.com/sponsor