removed verbose sql logs

src/main/java/org/hbp/mip/configuration/PersistenceConfiguration.java

@@ -11,7 +11,6 @@ import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
 import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
 
 import javax.sql.DataSource;
-import java.util.Properties;
 
 /**
  * Created by mirco on 11.07.16.
@@ -36,13 +35,7 @@ public class PersistenceConfiguration {
         em.setDataSource(dataSource);
         JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
         em.setJpaVendorAdapter(vendorAdapter);
-        em.setJpaProperties(additionalProperties());
         return em;
     }
 
-    Properties additionalProperties() {
-        Properties properties = new Properties();
-        properties.setProperty("hibernate.show_sql", "true");
-        return properties;
-    }
 }