remove mysql and h2

pom.xml

 			<artifactId>spring-boot-starter-data-jpa</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>mysql</groupId>
-			<artifactId>mysql-connector-java</artifactId>
-		</dependency>
-		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-rest</artifactId>
 		</dependency>