fix(测试用例): 导出xmind字段问题

--bug=1045424 --user=王旭 【测试用例】用例导出为xmind-用例步骤无内容-导出勾选步骤描述和预期结果-导出后无该字段 https://www.tapd.cn/55049933/s/1584799

backend/services/case-management/src/main/java/io/metersphere/functional/xmind/utils/XmindExportUtil.java

@@ -541,12 +541,8 @@ public class XmindExportUtil {
                         if (style != null) {
                             stepTopic.setStyleId(style.getId());
                         }
-
-                        boolean hasResult = false;
                         if (obj.containsKey("result")) {
                             String result = obj.get("result");
-                            if (StringUtils.isNotEmpty(result)) {
-                                hasResult = true;
                             ITopic resultTopic = workbook.createTopic();
                             resultTopic.setTitleText(Translator.get("xmind_expectedResult").concat("：").concat(result));
                             if (style != null) {
@@ -554,13 +550,8 @@ public class XmindExportUtil {
                             }
                             stepTopic.add(resultTopic, ITopic.ATTACHED);
                         }
-                        }
-
-                        if (StringUtils.isNotEmpty(desc) || hasResult) {
                         stepDesTopic.add(stepTopic, ITopic.ATTACHED);
                     }
-
-                    }
                 }
                 if (CollectionUtils.isEmpty(arr)) {
                     ITopic stepTopic = workbook.createTopic();