Remove gradle

Author: ThomasPerkins1123

README.md

@@ -4,7 +4,8 @@
 
 ## Understanding the Spring Petclinic application with a few diagrams
 
-[See the presentation here](https://speakerdeck.com/michaelisvy/spring-petclinic-sample-application)
+## Running petclinic locally
+Petclinic is a [Spring Boot](https://spring.io/guides/gs/spring-boot) application built using [Maven](https://spring.io/guides/gs/maven/). You can build a jar file and run it from the command line (it should work just as well with Java 17 or newer):
 
 ## Run Petclinic locally
 
@@ -27,8 +28,6 @@ Or you can run it from Maven directly using the Spring Boot Maven plugin. If you
 ./mvnw spring-boot:run
 ```
 
-> NOTE: If you prefer to use Gradle, you can build the app using `./gradlew build` and look for the jar file in `build/libs`.
-
 ## Building a Container
 
 There is no `Dockerfile` in this project. You can build a container image (if you have a docker daemon) using the Spring Boot build plugin: