delMiniTimer in haandler storage test

tests/test_handler_storage.py

@@ -50,18 +50,6 @@ class TestHandler(DataHandlerLP):
         return fields, names
 
 
-class MiniTimer:
-    def __init__(self, name):
-        self.name = name
-
-    def __enter__(self):
-        self.start = time.time()
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        self.end = time.time()
-        print(f"[Timer Info] <{self.name}> process costs {self.end - self.start} seconds")
-
-
 class TestHandlerStorage(TestAutoData):
 
     market = "all"