Merge pull request #1 from noranhe/main

修复导入csv结束时间显示问题+删除用不到的代码

Author: vnpy

vnpy_datamanager/engine.py

@@ -88,10 +88,11 @@ def import_data_from_csv(
             if not start:
                 start = bar.datetime
 
+        end = bar.datetime
+
         # insert into database
         self.database.save_bar_data(bars)
 
-        end = bar.datetime
         return start, end, count
 
     def output_data_to_csv(
@@ -233,9 +234,6 @@ def download_tick_data(
             end=datetime.now(DB_TZ)
         )
 
-        if not self.datafeed.inited:
-            self.datafeed.init()
-
         data = self.datafeed.query_tick_history(req)
 
         if data: