removed duplicate block, addresses issue spring-guides#53

Author: florianmaier101178

README.adoc

@@ -141,15 +141,7 @@ include::complete/src/main/java/com/example/accessingdatajpa/AccessingDataJpaApp
 ----
 ====
 
-`Application` includes a `demo()` method that puts the `CustomerRepository` through a few tests. First, it fetches the `CustomerRepository` from the Spring application context. Then it saves a handful of `Customer` objects, demonstrating the `save()` method and setting up some data to work with. Next, it calls `findAll()` to fetch all `Customer` objects from the database. Then it calls `findOne()` to fetch a single `Customer` by its ID. Finally, it calls `findByLastName()` to find all customers whose last name is "Bauer". The `demo()` method returns a `CommandLineRunner` bean that automatically runs the code when the application launches.
-
-The `AccessingDataJpaApplication` class includes a `main()` method that puts the
-`CustomerRepository` through a few tests. First, it fetches the `CustomerRepository` from
-the Spring application context. Then it saves a handful of `Customer` objects,
-demonstrating the `save()` method and setting up some data to use. Next, it calls
-`findAll()` to fetch all `Customer` objects from the database. Then it calls `findOne()`
-to fetch a single `Customer` by its ID. Finally, it calls `findByLastName()` to find all
-customers whose last name is "Bauer".
+The `AccessingDataJpaApplication` class includes a `demo()` method that puts the `CustomerRepository` through a few tests. First, it fetches the `CustomerRepository` from the Spring application context. Then it saves a handful of `Customer` objects, demonstrating the `save()` method and setting up some data to work with. Next, it calls `findAll()` to fetch all `Customer` objects from the database. Then it calls `findOne()` to fetch a single `Customer` by its ID. Finally, it calls `findByLastName()` to find all customers whose last name is "Bauer". The `demo()` method returns a `CommandLineRunner` bean that automatically runs the code when the application launches.
 
 NOTE: By default, Spring Boot enables JPA repository support and looks in the package (and
 its subpackages) where `@SpringBootApplication` is located. If your configuration has