I have it also, how can we get rid of it?
That is a lot of data. IMO Verizon's should be throttling to protect customers that don't have unlimited data. If a lot of customers were using that much data it would capsize Verizon's network.
Been there, done that with my old computers. After awhile, it grows old, and large. Phones have gotten smaller, so less space, but.... nah. I have no interest in it myself, but please enjoy.
The "add-on" is probably the actual billing feature that includes the 6GB on your profile.