Not quite what I'm looking for.
I want to remove any SMS functionality from the phone...
I don't want anyone, or any app, to be able to send any SMS messages.
If an SMS message is sent to the phone, I don't want the phone acknowledging back to my provider that the SMS was received.
Basically, I don't want to pay for ANY SMS messages going to or from my phone, so I want to completely break that functionality.