Update README.md (eugenp#4330)

Author: pivovarit

README.md

@@ -39,6 +39,3 @@ This tutorials project is being built **[>> HERE](https://rest-security.ci.cloud
 
 - [Apache Maven Standard Directory Layout](http://www.baeldung.com/maven-directory-structure)
 - [Apache Maven Tutorial](http://www.baeldung.com/maven)
-- [Designing a User Friendly Java Library](http://www.baeldung.com/design-a-user-friendly-java-library)
-- [Java Service Provider Interface](http://www.baeldung.com/java-spi)
-- [Java Streams vs Vavr Streams](http://www.baeldung.com/vavr-java-streams)