Fix compiler warnings

spring-batch-core/src/main/java/org/springframework/batch/core/domain/JobInstanceProperties.java

@@ -11,7 +11,6 @@ import java.util.Map;
 import java.util.Map.Entry;
 
 import org.apache.commons.lang.builder.HashCodeBuilder;
-import org.springframework.util.Assert;
 
 /**
  * Value object representing runtime parameters to a batch job.  Because

spring-batch-core/src/main/java/org/springframework/batch/core/runtime/SimpleJobIdentifier.java

@@ -38,7 +38,7 @@ public class SimpleJobIdentifier implements JobIdentifier {
 	 * Default constructor.  Since there it is required that the Identifier at least have a name,
 	 * the default constructor should not be called.
 	 */
-	private SimpleJobIdentifier() {
+	SimpleJobIdentifier() {
 		super();
 	}