eraseKVBatch

int eraseKVBatch(const RemoveKVBatchReq &req, RemoveKVBatchRsp &rsp)

功能： 批量删除数据，该接口不允许用来删除脏数据

参数：

struct RemoveKVBatchReq
{
  1 require string moduleName;  //模块名
  2 require vector<KeyInfo> data;  
};
struct KeyInfo
{
  1 require string keyItem; //键
  2 require byte version;  //数据版本号
};
struct RemoveKVBatchRsp
{
  1 require map<string, int> keyResult;  //每个key写入的结果 WRITE_SUCC = 0/WRITE_ERROR = -1/WRITE_DATA_VER_MISMATCH = -2
};

返回值：