modify contract fund field

Author: tigersk

CHANGELOG.md

@@ -6,6 +6,7 @@
   `QuoteClient.get_fund_history_quote` 基金历史行情
   `QuoteClient.get_fund_contracts` 基金合约
 - 订单数据推送中新增字段 `totalCashAmount`, `filledCashAmount`
+- PushClient 可自定义心跳回调方法
 
 ## 3.0.6 (2023-07-31)
 ### Modify

tigeropen/trade/domain/contract.py

@@ -88,11 +88,6 @@ def __init__(self, symbol=None, currency=None, contract_id=None, sec_type=None,
         self.discounted_time_zone_code = kwargs.get('discounted_time_zone_code')
         self.discounted_start_at = kwargs.get('discounted_start_at')
         self.discounted_end_at = kwargs.get('discounted_end_at')
-        # Funds contract fields
-        self.company_name = kwargs.get('company_name', None)
-        self.sub_type = kwargs.get('sub_type', None)
-        self.dividend_type = kwargs.get('dividend_type', None)
-        self.tiger_vault = kwargs.get('tiger_vault', None)
 
     @property
     def right(self):