Remove redundant code

createPersistentEntity(..) effectively only calls the overriden method.
It therefore can be deleted.

Remove error message no longer used.

Original pull request #1783

Author: pcvolkmer

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/mapping/JdbcMappingContext.java

@@ -36,11 +36,10 @@
  * @author Kazuki Shimizu
  * @author Oliver Gierke
  * @author Mark Paluch
+ * @author Paul-Christian Volkmer
  */
 public class JdbcMappingContext extends RelationalMappingContext {
 
-	private static final String MISSING_PARAMETER_NAME = "A constructor parameter name must not be null to be used with Spring Data JDBC; Offending parameter: %s";
-
 	/**
 	 * Creates a new {@link JdbcMappingContext}.
 	 */
@@ -59,19 +58,6 @@ public JdbcMappingContext(NamingStrategy namingStrategy) {
 		setSimpleTypeHolder(JdbcSimpleTypes.HOLDER);
 	}
 
-	@Override
-	protected <T> RelationalPersistentEntity<T> createPersistentEntity(TypeInformation<T> typeInformation) {
-
-		RelationalPersistentEntity<T> entity = super.createPersistentEntity(typeInformation);
-		InstanceCreatorMetadata<RelationalPersistentProperty> creator = entity.getInstanceCreatorMetadata();
-
-		if (creator == null) {
-			return entity;
-		}
-
-		return entity;
-	}
-
 	@Override
 	protected RelationalPersistentProperty createPersistentProperty(Property property,
 			RelationalPersistentEntity<?> owner, SimpleTypeHolder simpleTypeHolder) {