Polish samples (#5187)

1. remove methods indentical to default method
2. remove unused method parameter
3. fix visibility scope

Signed-off-by: Yanming Zhou <[email protected]>

Author: quaff

spring-batch-samples/src/main/java/org/springframework/batch/samples/common/ErrorLogTasklet.java

@@ -81,9 +81,4 @@ public void beforeStep(StepExecution stepExecution) {
 		stepExecution.getJobExecution().getExecutionContext().remove("stepName");
 	}
 
-	@Override
-	public @Nullable ExitStatus afterStep(StepExecution stepExecution) {
-		return null;
-	}
-
 }

spring-batch-samples/src/main/java/org/springframework/batch/samples/common/StagingItemReader.java

@@ -132,11 +132,6 @@ private static Object deserialize(InputStream inputStream) {
 		}
 	}
 
-	@Override
-	public @Nullable ExitStatus afterStep(StepExecution stepExecution) {
-		return null;
-	}
-
 	@Override
 	public void beforeStep(StepExecution stepExecution) {
 		this.stepExecution = stepExecution;

spring-batch-samples/src/main/java/org/springframework/batch/samples/common/StagingItemWriter.java

@@ -96,11 +96,6 @@ public void setValues(PreparedStatement ps, int i) throws SQLException {
 				});
 	}
 
-	@Override
-	public @Nullable ExitStatus afterStep(StepExecution stepExecution) {
-		return null;
-	}
-
 	@Override
 	public void beforeStep(StepExecution stepExecution) {
 		this.stepExecution = stepExecution;

spring-batch-samples/src/main/java/org/springframework/batch/samples/partitioning/local/PartitionJdbcJobConfiguration.java

@@ -42,7 +42,7 @@
 @Import(DataSourceConfiguration.class)
 public class PartitionJdbcJobConfiguration {
 
-	record Owner(int id, String firstName, String lastName) {
+	public record Owner(int id, String firstName, String lastName) {
 	}
 
 	@Bean

spring-batch-samples/src/main/java/org/springframework/batch/samples/remotestep/ManagerConfiguration.java

@@ -58,11 +58,10 @@ public DirectChannel requests() {
 	}
 
 	@Bean
-	public IntegrationFlow outboundFlow(ActiveMQConnectionFactory connectionFactory, BeanFactory beanFactory) {
-		StandardIntegrationFlow integrationFlow = IntegrationFlow.from(requests())
+	public IntegrationFlow outboundFlow(ActiveMQConnectionFactory connectionFactory) {
+		return IntegrationFlow.from(requests())
 			.handle(Jms.outboundAdapter(connectionFactory).destination("requests"))
 			.get();
-		return integrationFlow;
 	}
 
 	@Bean