Clean up some TODOs from core

spring-batch-core/src/test/java/org/springframework/batch/core/configuration/xml/TestIncrementer.java

@@ -6,7 +6,6 @@ import org.springframework.batch.core.JobParametersIncrementer;
 public class TestIncrementer implements JobParametersIncrementer{
 
 	public JobParameters getNext(JobParameters parameters) {
-		// TODO Auto-generated method stub
 		return null;
 	}
 

spring-batch-core/src/test/java/org/springframework/batch/core/listener/StepListenerMethodInterceptorTests.java

@@ -106,24 +106,20 @@ public class StepListenerMethodInterceptorTests {
 		}
 
 		public Object[] getArguments() {
-			// TODO Auto-generated method stub
 			return null;
 		}
 
 		public AccessibleObject getStaticPart() {
-			// TODO Auto-generated method stub
 			return null;
 		}
 
 		public Object getThis() {
-			// TODO Auto-generated method stub
 			return null;
 		}
 
 		public Object proceed() throws Throwable {
-			// TODO Auto-generated method stub
 			return null;
 		}
 		
 	}
-}
+}

spring-batch-core/src/test/java/org/springframework/batch/core/step/item/TaskletStepExceptionTests.java

@@ -272,7 +272,6 @@ public class TaskletStepExceptionTests {
 		}
 
 		public JobExecution getLastJobExecution(String jobName, JobParameters jobParameters) {
-			// TODO Auto-generated method stub
 			return null;
 		}
 	}