Remove Deprecated Shutdown strategy classes

Signed-off-by: Glenn Renfro <grenfro@vmware.com>

spring-cloud-dataflow-common/spring-cloud-dataflow-common-test-docker/src/main/java/org/springframework/cloud/dataflow/common/test/docker/compose/configuration/ShutdownStrategy.java

@@ -17,8 +17,6 @@
 
 import java.io.IOException;
 
-import org.springframework.cloud.dataflow.common.test.docker.compose.execution.AggressiveShutdownStrategy;
-import org.springframework.cloud.dataflow.common.test.docker.compose.execution.AggressiveShutdownWithNetworkCleanupStrategy;
 import org.springframework.cloud.dataflow.common.test.docker.compose.execution.Docker;
 import org.springframework.cloud.dataflow.common.test.docker.compose.execution.DockerCompose;
 import org.springframework.cloud.dataflow.common.test.docker.compose.execution.GracefulShutdownStrategy;
@@ -31,20 +29,6 @@
  */
 public interface ShutdownStrategy {
 
-    /**
-     * Call rm on all containers, working around btrfs bug on CircleCI.
-     *
-     * @deprecated Use {@link #KILL_DOWN} (the default strategy)
-     */
-    @Deprecated
-    ShutdownStrategy AGGRESSIVE = new AggressiveShutdownStrategy();
-    /**
-     * Call rm on all containers, then call docker-compose down.
-     *
-     * @deprecated Use {@link #KILL_DOWN} (the default strategy)
-     */
-    @Deprecated
-    ShutdownStrategy AGGRESSIVE_WITH_NETWORK_CLEANUP = new AggressiveShutdownWithNetworkCleanupStrategy();
     /**
      * Call docker-compose down, kill, then rm. Allows containers up to 10 seconds to shut down
      * gracefully.

whats-new.adoc

@@ -41,6 +41,7 @@ VersionInfoProperties versionInfoProperties, SecurityStateBean securityStateBean
 * The deprecated `rollback(String releaseName, int releaseVersion)` method in SkipperClient has been removed.  Use  `rollback(RollbackRequest rollbackRequest).
 * Removed the `DefaultTaskExecutionService` constructor that does not take the `composedTaskRunnerConfigurationProperties` parameter.  Use the constructor that offers the `composedTaskRunnerConfigurationProperties` parameter.
 * * Removed the `DefaultTaskExecutionInfoService` constructor that does not take the `composedTaskRunnerConfigurationProperties` parameter.  Use the constructor that offers the `composedTaskRunnerConfigurationProperties` parameter.
-=== Breaking Changes
+* AggressiveShutdownStrategy & AggressiveShutdownWithNetworkCleanupStrategy deprecated classes have been removed.   Use the KillDownShutdownStrategy class.
+== Breaking Changes
 Announce deprecated changes here