## 删除索引
```
DELETE /user
```
删除成功返回
```
{
"acknowledged" : true
}
```
重复删除返回
```
{
"error" : {
"root_cause" : [
{
"type" : "index_not_found_exception",
"reason" : "no such index [user]",
"resource.type" : "index_or_alias",
"resource.id" : "user",
"index_uuid" : "_na_",
"index" : "user"
}
],
"type" : "index_not_found_exception",
"reason" : "no such index [user]",
"resource.type" : "index_or_alias",
"resource.id" : "user",
"index_uuid" : "_na_",
"index" : "user"
},
"status" : 404
}
```
