修正插入购买记录时使用正确的SQL日期函数

在`BuyMapper.xml`中，插入购买记录的SQL语句使用了错误的日期函数。现已修正，使用`now()`替代`new()`，以确保在插入记录时能够正确获取当前日期和时间。

src/main/java/com/muyu/system/service/impl/BuyServiceImpl.java

@@ -45,11 +45,6 @@ public class BuyServiceImpl extends ServiceImpl<BuyMapper, Connector> implements
         if (i>0){
             user.setUserBalance(user.getUserBalance()-connectorUser.getConnectorFrequency()*connectorUser.getConnectorPrice());
             buyMapper.buyPrice(user);
-            ConnectorLog connectorLog = new ConnectorLog();
-            connectorLog.setDataName(connectorUser.getConnectorName());
-            connectorLog.setAmount(connectorUser.getConnectorPrice());
-            // 插入购买记录
-            buyMapper.insertPurchaseRecord(connectorLog);
             return Result.success(i,"购买成功");
         }
         ConnectorUser connectorUser1 = buyMapper.selectConnectorUser(connectorUser);