OPEN - issue BATCH-324: Step as factory for StepExecutor

http://jira.springframework.org/browse/BATCH-324

Remove StepExecutorFactory strategy.

spring-batch-core/src/main/java/org/springframework/batch/core/executor/StepExecutorFactory.java

@@ -1,44 +0,0 @@
-/*
- * Copyright 2006-2007 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.batch.core.executor;
-
-import org.springframework.batch.core.domain.Step;
-
-/**
- * Factory interface for creating or locating {@link StepExecutor} instances.
- * Because step execution parameters and policies can vary from step to step, a
- * {@link StepExecutor} should be created by the caller using a
- * {@link StepExecutorFactory}. The factory is responsible for ensuring that
- * the returned instance is appropriate for the step supplied. If the
- * {@link StepExecutor} instance is stateful (which is normal) the factory
- * should return a different instance for each call.
- * 
- * @author Dave Syer
- * 
- */
-public interface StepExecutorFactory {
-
-	/**
-	 * Use the step given to create or locate a suitable
-	 * {@link StepExecutor}.
-	 * 
-	 * @param step a {@link Step} instance.
-	 * @return a {@link StepExecutor} that can be used to execute a step with
-	 * the given step
-	 */
-	StepExecutor getExecutor(Step step);
-
-}