Let's just get one thing straight: removing 'MoH' does not preclude you from using dial-up via your modem as a back-up to broadband. ...It's merely an applet providing an additional facility, which to be honest I would be quite surprised if extensively used, even in the heyday of dial-up.
so why not leave it well alone and who knows, you may even use it one day when your BB is down and are on Dial-up, and someone is desperately trying to call you to say you have won the lottery ....