backlink removed

Author: collaboratewithakash

spring-4/README.md

@@ -4,7 +4,6 @@ This module contains articles about Spring 4
 
 ### Relevant Articles:
 - [A Guide to Flips for Spring](https://www.baeldung.com/flips-spring)
-- [Configuring a Hikari Connection Pool with Spring Boot](https://www.baeldung.com/spring-boot-hikari)
 - [Spring JSON-P with Jackson](https://www.baeldung.com/spring-jackson-jsonp)
 - [What’s New in Spring 4.3?](https://www.baeldung.com/whats-new-in-spring-4-3)
 - [Spring Boot Actuator](https://www.baeldung.com/spring-boot-actuators)