api：

#删除指定id的文档
DELETE /<index>/_doc/<_id>
#按查询条件删除
POST /<index>/_delete_by_query

1. DELETE /<index>/_doc/<_id>

#测试--删除文档
DELETE /king_test_person/_doc/223/

2.POST /<index>/_delete_by_query

#测试--删除delete_by_query
POST /king_test_person/_delete_by_query
{
  "query": {
    "term":{
      "name": "张三"
    }
  }
}