Don't detect persistenceUnitRootLocation

Update JpaBaseConfiguration so that the persistenceUnitRootLocation is
no longer detected. The update to gh-7003 means that we can now rely on
the standard detection mechanism.

Fixes gh-6983
See gh-6635

Author: philwebb

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/JpaBaseConfiguration.java

@@ -16,16 +16,12 @@
 
 package org.springframework.boot.autoconfigure.orm.jpa;
 
-import java.net.URL;
 import java.util.List;
 import java.util.Map;
 
 import javax.persistence.EntityManagerFactory;
 import javax.sql.DataSource;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
 import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.BeanFactoryAware;
@@ -53,7 +49,6 @@
 import org.springframework.orm.jpa.vendor.AbstractJpaVendorAdapter;
 import org.springframework.transaction.PlatformTransactionManager;
 import org.springframework.transaction.jta.JtaTransactionManager;
-import org.springframework.util.ResourceUtils;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 
@@ -69,8 +64,6 @@
 @Import(DataSourceInitializedPublisher.Registrar.class)
 public abstract class JpaBaseConfiguration implements BeanFactoryAware {
 
-	private static final Log logger = LogFactory.getLog(JpaBaseConfiguration.class);
-
 	private final DataSource dataSource;
 
 	private final JpaProperties properties;
@@ -110,8 +103,7 @@ public EntityManagerFactoryBuilder entityManagerFactoryBuilder(
 			ObjectProvider<PersistenceUnitManager> persistenceUnitManagerProvider) {
 		EntityManagerFactoryBuilder builder = new EntityManagerFactoryBuilder(
 				jpaVendorAdapter, this.properties.getProperties(),
-				persistenceUnitManagerProvider.getIfAvailable(),
-				determinePersistenceUnitRootLocation());
+				persistenceUnitManagerProvider.getIfAvailable());
 		builder.setCallback(getVendorCallback());
 		return builder;
 	}
@@ -190,19 +182,6 @@ public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
 		this.beanFactory = (ConfigurableListableBeanFactory) beanFactory;
 	}
 
-	private URL determinePersistenceUnitRootLocation() {
-		Class<?> source = getClass();
-		try {
-			URL url = source.getProtectionDomain().getCodeSource().getLocation();
-			return ResourceUtils.extractJarFileURL(url);
-		}
-		catch (Exception ex) {
-			logger.info("Could not determine persistence " + "unit root location from "
-					+ source + " : " + ex);
-		}
-		return null;
-	}
-
 	@Configuration
 	@ConditionalOnWebApplication
 	@ConditionalOnClass(WebMvcConfigurerAdapter.class)