AFAIK, if you delete the individual recent places, then the new ones will pop up. However, if you delete the array, that should prevent any new ones from popping up. However, I'd probably make a copy of the current one, giving it a new name, such as .GlobalPreferences.bak, so you can restore things, if deleting the original array fouls things up. That's up to you, but I give no guarantees.
Thanks for the feedback. Good computing.