Delete unused import (#9094)

Signed-off-by: zhuwenxing <wenxing.zhu@zilliz.com>

tests/python_client/testcases/test_alias.py

@@ -6,8 +6,6 @@ from utils.util_log import test_log as log
 from common import common_func as cf
 from common import common_type as ct
 from common.common_type import CaseLabel, CheckTasks
-from utils.utils import *
-from common.constants import *
 
 prefix = "alias"
 exp_name = "name"