cleaned up pom.xml

persistence-modules/spring-data-jpa-3/pom.xml

@@ -47,13 +47,11 @@
         <dependency>
             <groupId>org.postgresql</groupId>
             <artifactId>postgresql</artifactId>
-            <version>${postgresql.version}</version>
         </dependency>
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
             <scope>runtime</scope>
-            <version>${h2.version}</version>
         </dependency>
 
         <!-- Test Dependencies -->
@@ -81,7 +79,6 @@
         <dependency>
             <groupId>org.junit.platform</groupId>
             <artifactId>junit-platform-launcher</artifactId>
-            <version>${junit-platform.version}</version>
             <scope>test</scope>
         </dependency>