How to stop “Upgrade to MacOS High Sierra” notifications completely on a Mac

OS X Daily:

If you’re tired of the “Upgrade to macOS High Sierra” notifications nagging your Mac to install a system software update that you perhaps have made a conscious decision to avoid, then you will likely appreciate this tip to completely stop the upgrade macOS notifications.

This is a great tip for those of us who can’t or don’t want to upgrade to MacOS High Sierra. But when I tried the tip both ways, my Mac doesn’t seem to have a “/Library/Bundles/” folder and the Terminal command comes back with an “OSXNotification.bundle: No such file or directory” result. Should I be concerned?