Why is there a phone app and a messaging app on the nook color?

[demoport]

Hi guys,

I was just wondering, for those that use Mirage's GB build for the nook color, why is there a phone app and a messaging app when you cant really use the nook as a phone? Also when I use the volume buttons, the ROM thinks that I want to put the nook on silent/vibration mode, kinda like a cell phone, but whats the point of that when you cant use a nook color as a phone?

Is there a ROM that doesn't have those phone options included?