Update ComponentStartTaskTest.java

Author: lvkaihua

bigtop-manager-server/src/test/java/org/apache/bigtop/manager/server/command/task/ComponentStartTaskTest.java

@@ -21,14 +21,11 @@
 import org.apache.bigtop.manager.common.enums.Command;
 import org.apache.bigtop.manager.common.utils.JsonUtils;
 import org.apache.bigtop.manager.dao.po.ComponentPO;
-import org.apache.bigtop.manager.dao.po.HostPO;
 import org.apache.bigtop.manager.dao.po.TaskPO;
 import org.apache.bigtop.manager.dao.repository.ComponentDao;
 import org.apache.bigtop.manager.dao.repository.HostDao;
 import org.apache.bigtop.manager.dao.repository.TaskDao;
 import org.apache.bigtop.manager.server.holder.SpringContextHolder;
-import org.apache.bigtop.manager.server.model.dto.ComponentDTO;
-import org.apache.bigtop.manager.server.model.dto.StackDTO;
 import org.apache.bigtop.manager.server.utils.StackUtils;
 
 import org.junit.jupiter.api.AfterEach;