fix(测试跟踪): 左侧模块树新增模块删除时多次提示问题

--bug=1024083 --user=宋昌昌 【测试跟踪】删除模块操作，不应该有报错提示 https://www.tapd.cn/55049933/s/1347194

framework/sdk-parent/frontend/src/components/new-ui/MsNodeTree.vue

@@ -445,24 +445,20 @@ export default {
     save(node, data) {
       if (data.name.trim() === '') {
         this.$warning(this.$t('test_track.module.input_name'), false);
-        this.$refs['nameInput'].focus();
         return;
       }
       if (data.name.trim().length > this.nameLimit) {
         this.$warning(this.$t('test_track.length_less_than') + this.nameLimit, false);
-        this.$refs['nameInput'].focus();
         return;
       }
       if (data.name.indexOf("\\") > -1) {
         this.$warning(this.$t('commons.node_name_tip'), false);
-        this.$refs['nameInput'].focus();
         return;
       }
       let sameLevelNode = node.parent.childNodes;
       let filterNode = sameLevelNode.filter(sameNode => sameNode.data.name === node.data.name);
       if (filterNode.length > 1) {
         this.$warning(this.$t('test_track.module.case_module_already_exists'), false);
-        this.$refs['nameInput'].focus();
         return;
       }
       let param = {};