Update README.md

Author: charlesgonzales

spring-security-rest/README.md

@@ -15,5 +15,4 @@ The "Learn Spring Security" Classes: http://github.learnspringsecurity.com
 - [Spring Security Context Propagation with @Async](http://www.baeldung.com/spring-security-async-principal-propagation)
 - [Servlet 3 Async Support with Spring MVC and Spring Security](http://www.baeldung.com/spring-mvc-async-security)
 - [Intro to Spring Security Expressions](http://www.baeldung.com/spring-security-expressions)
-- [Error Handling for REST with Spring](https://www.baeldung.com/exception-handling-for-rest-with-spring)
 - [Spring Security for a REST API](http://www.baeldung.com/securing-a-restful-web-service-with-spring-security)