Fixed python lint issue

Signed-off-by: Jaehyun Kim <[email protected]>

Author: jhkim-pii

flow/util/genRuleFile.py

@@ -58,9 +58,8 @@ def gen_rule_file(
     #     'min_max_direct': <float>, optional
     #     'min_max_sum': <float>, optional
     #     'min_max_period': <float>, optional
-    #     'level': <bool>, severity level. ['warning' or 
+    #     'level': <bool>, severity level. ['warning' or
     #                                        others (means ERROR, default) ]
-    #               
     # }
 
     rules_dict = {