Update sponsors.

Autogenerated by the [sponsors-maintainers-man-completions](https://github.com/Homebrew/brew/blob/HEAD/.github/workflows/sponsors-maintainers-man-completions.yml) workflow.

Author: BrewTestBot

README.md

@@ -83,6 +83,4 @@ Secure password storage and syncing is provided by [1Password for Teams](https:/
 [![DNSimple](https://cdn.dnsimple.com/assets/resolving-with-us/logo-light.png)](https://dnsimple.com/resolving/homebrew#gh-light-mode-only)
 [![DNSimple](https://cdn.dnsimple.com/assets/resolving-with-us/logo-dark.png)](https://dnsimple.com/resolving/homebrew#gh-dark-mode-only)
 
-Homebrew is generously supported by [GitHub](https://github.com/github), [Joshua Baer](https://github.com/joshuabaer), [Custom Ink](https://github.com/customink), [Randy Reddig](https://github.com/ydnar), [Codecademy](https://github.com/Codecademy), [SAP](https://github.com/SAP), [b.well](https://github.com/icanbwell), [Aagam Dalal](https://github.com/AaDalal), [Workbrew](https://github.com/Workbrew) and many other users and organisations via [GitHub Sponsors](https://github.com/sponsors/Homebrew).
-
-[![GitHub](https://github.com/github.png?size=64)](https://github.com/github)
+Homebrew is generously supported by [Joshua Baer](https://github.com/joshuabaer), [Custom Ink](https://github.com/customink), [Randy Reddig](https://github.com/ydnar), [Codecademy](https://github.com/Codecademy), [SAP](https://github.com/SAP), [b.well](https://github.com/icanbwell), [Aagam Dalal](https://github.com/AaDalal), [Workbrew](https://github.com/Workbrew) and many other users and organisations via [GitHub Sponsors](https://github.com/sponsors/Homebrew).