[tests] Remove global_setup function

test/test_download.py

@@ -9,12 +9,10 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 from test.helper import (
     get_params,
     get_testcases,
-    global_setup,
     try_rm,
     md5,
     report_warning
 )
-global_setup()
 
 
 import hashlib