Hi @michelecocuccio
I’m afraid this is not possible from ACF side. Could you please ask the plugin author if there’s a way to disable it from their side?
There is a similar issue with Enfold theme, and they can fix it by disabling it from Enfold’s side. This page should give you more idea about it: http://www.kriesi.at/support/topic/disable-google-maps-api-call-in-backend/#post-308708.
Thanks 🙂