删除过期缓存数据时，trades总条数计算修正

src/msv.rs

@@ -299,13 +299,9 @@ pub fn generate_msv_by_trades(mut trades: Vec<Trade>, mills_back: Decimal, simpl
 pub fn delete_expire_data(mut msv: Indicators, hour_num: i64) -> Indicators {
     let now = Utc::now().timestamp_millis();
     let limit_time = now - 60 * 1000 * 60 * hour_num;
-    let old_size = msv.indicator.len();
     msv.indicator.retain(|info| info.timestamp.to_i64().unwrap() < limit_time);
-    let delete_num = old_size - msv.indicator.len();
     // 更新有效条数
     msv.result_size = msv.indicator.len().to_i64().unwrap();
-    // 更新总条数
-    msv.total_size -= delete_num.to_i64().unwrap();
     msv
 }