Remove license section from README, GitHub shows it in the sidebar

🤖 Generated with Claude Code

Author: spawnia

README.md

@@ -61,7 +61,3 @@ Your logo will show up here with a link to your website.
 <a href="https://opencollective.com/webonyx-graphql-php/sponsor/7/website" target="_blank"><img src="https://opencollective.com/webonyx-graphql-php/sponsor/7/avatar.svg"></a>
 <a href="https://opencollective.com/webonyx-graphql-php/sponsor/8/website" target="_blank"><img src="https://opencollective.com/webonyx-graphql-php/sponsor/8/avatar.svg"></a>
 <a href="https://opencollective.com/webonyx-graphql-php/sponsor/9/website" target="_blank"><img src="https://opencollective.com/webonyx-graphql-php/sponsor/9/avatar.svg"></a>
-
-## License
-
-See [LICENSE](LICENSE).