fix the pylint error in test_summary_watcher file

tests/ut/datavisual/data_transform/test_summary_watcher.py

@@ -25,10 +25,10 @@ import random
 import shutil
 import tempfile
 
-from mindinsight.datavisual.data_transform.summary_watcher import SummaryWatcher
-
 import pytest
 
+from mindinsight.datavisual.data_transform.summary_watcher import SummaryWatcher
+
 
 def gen_directories_and_files(summary_base_dir, file_count, directory_count):
     """Generate directories and files for test."""