removed some dead links in readme

Author: mrin9

README.md

@@ -227,15 +227,3 @@ Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com
 
 Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/angular-springboot-rest-jwt#sponsor)]
 
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/0/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/0/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/1/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/1/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/2/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/2/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/3/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/3/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/4/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/4/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/5/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/5/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/6/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/6/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/7/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/7/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/8/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/8/avatar.svg"></a>
-<a href="https://opencollective.com/angular-springboot-rest-jwt/sponsor/9/website" target="_blank"><img src="https://opencollective.com/angular-springboot-rest-jwt/sponsor/9/avatar.svg"></a>
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