[JAVA-2306] Moved articles from spring-persistence-simple-2

* https://www.baeldung.com/spring-jdbctemplate-testing went to spring-jdbc

* https://www.baeldung.com/spring-jdbctemplate-in-list went to spring-jdbc

* https://www.baeldung.com/spring-mock-jndi-datasource went to spring-persistence-simple

* Deleted spring-persistence-simple-2 module as all articles have been moved

persistence-modules/spring-persistence-simple/src/main/resources/com/baeldung/spring/jndi/datasource/mock/datasource.properties

@@ -0,0 +1,5 @@
+ds.type=javax.sql.DataSource
+ds.driver=org.h2.Driver
+ds.url=jdbc:jdbc:h2:mem:testdb
+ds.user=sa
+ds.password=password

persistence-modules/spring-persistence-simple/src/main/resources/jndi.properties

@@ -0,0 +1,6 @@
+java.naming.factory.initial=org.osjava.sj.SimpleContextFactory
+org.osjava.sj.jndi.shared=true
+org.osjava.sj.delimiter=.
+jndi.syntax.separator=/
+org.osjava.sj.space=java:/comp/env
+org.osjava.sj.root=src/main/resources/com/baeldung/spring/jndi/datasource/mock