flake8: disable warning on import of version_check not used

also add comment. import version_check will exit if it fails.

Author: rouilj

roundup/scripts/roundup_admin.py

@@ -33,8 +33,8 @@
 # --/
 
 
-# python version check
-from roundup import version_check
+# python version check - import exits if version invalid
+from roundup import version_check  # noqa: F401
 
 # import the admin tool guts and make it go
 from roundup.admin import AdminTool