Removed throwable from StepExecution (it's not persisted anyway, but the ExitStatus is)

core/src/main/java/org/springframework/batch/core/domain/StepExecution.java

@@ -55,8 +55,6 @@ public class StepExecution extends Entity {
 
 	private ExitStatus exitStatus = ExitStatus.UNKNOWN;
 	
-	private Throwable exception;
-	
 	/**
 	 * Package private constructor for Hibernate
 	 */
@@ -212,14 +210,6 @@ public class StepExecution extends Entity {
 		return exitStatus;
 	}
 
-	public void setException(Throwable exception) {
-		this.exception = exception;
-	}
-	
-	public Throwable getException() {
-		return exception;
-	}
-
 	/**
 	 * Accessor for the step governing this execution.
 	 * @return the step