I only have 3.8M free on the device now. I'd like to delete using the built-in delete function from the applications menu.

This is what is listed:
Camera Canned Messages 4k (Is this necessary on the 650, or is it just a legacy from 600)
Camera CompAddress 3k (Is this necessary on the 650, or is it just a legacy from 600)
Camera CompDomain 3k (Is this necessary on the 650, or is it just a legacy from 600)
CityTimeDB 72k (Is this necessary on the 650, or is it just a legacy from 600)
GoodTunes 6k
HSAdvCalcDB (Is this necessary on the 650, or is it just a legacy from 600)
MMUpgrade 312k (I don't plan on using Versamail)
ProvDB 13k
Trn0-d10.dat 12k

Does anyone if I can delete these, and what they are exactly?