递归去除树形数据末节点的空节点.

result":[{"key":"465843616082821120","value":"465843616082821120","title":"交通集团2019年度资产负债及损益情况审计（审计局）","isLeaf":true,"id":"465843616082821120","reportName":"交通集团2019年度资产负债及损益情况审计（审计局）","parentId":"","createId":"395969398973661184","createTime":"2021-07-09","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]},{"key":"481044984611471360","value":"481044984611471360","title":"收入预算+收入完成","isLeaf":true,"id":"481044984611471360","reportName":"收入预算+收入完成","parentId":"","createId":"395969398973661184","createTime":"2021-08-20","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]},{"key":"481045062575194112","value":"481045062575194112","title":"统计总额2021","isLeaf":false,"id":"481045062575194112","reportName":"统计总额2021","parentId":"","createId":"395969398973661184","createTime":"2021-08-20","updateId":"395969398973661184","updateTime":"2021-08-20","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[{"key":"481050127927083008","value":"481050127927083008","title":"一月份统计额","isLeaf":true,"id":"481050127927083008","reportName":"一月份统计额","parentId":"481045062575194112","createId":"395969398973661184","createTime":"2021-08-20","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]},{"key":"481050227239813120","value":"481050227239813120","title":"二月份统计额","isLeaf":true,"id":"481050227239813120","reportName":"二月份统计额","parentId":"481045062575194112","createId":"395969398973661184","createTime":"2021-08-20","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]},{"key":"481050335935201280","value":"481050335935201280","title":"三月份统计额","isLeaf":true,"id":"481050335935201280","reportName":"三月份统计额","parentId":"481045062575194112","createId":"395969398973661184","createTime":"2021-08-20","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]},{"key":"481050367224709120","value":"481050367224709120","title":"四月份统计额","isLeaf":true,"id":"481050367224709120","reportName":"四月份统计额","parentId":"481045062575194112","createId":"395969398973661184","createTime":"2021-08-20","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]},{"key":"481051708139503616","value":"481051708139503616","title":"八月份统计额","isLeaf":true,"id":"481051708139503616","reportName":"八月份统计额","parentId":"481045062575194112","createId":"395969398973661184","createTime":"2021-08-20","updateId":null,"updateTime":"","deptId":"395962114956591104","orgId":"10","isDel":0,"children":[]}]}]

export function deleteChildren(arr) {  let childs = arr;  for (let i = childs.length; i--; i > 0) {    if (childs[i].children) {      if (childs[i].children.length) {        deleteChildren(childs[i].children);      } else {        delete childs[i].children;      }    }  }  return arr;}