OPEN - issue BATCH-350: Remove close() method from non ItemStreams

http://jira.springframework.org/browse/BATCH-350

Remove redundant close() method

spring-batch-execution/src/test/java/org/springframework/batch/execution/launch/EmptyItemWriter.java

@@ -58,7 +58,4 @@ public class EmptyItemWriter implements ItemWriter, InitializingBean {
 		return list;
 	}
 
-	public void close() throws Exception {
-	}
-
 }