There are punches that are made to use for roll pins, that have a little nub in the center to set inside the hollow roll pin center and keep it centered up and the outer diameter does it's job as you drive the roll pin out. You can also use the correct diameter regular punch to drive it out of there. When you do get enough of the roll pin punched out, you can grab the other side, that is protruding out, and twist it out of there with a pair of vise grips. But, if you do that, the pin can get damaged and then cannot reuse the roll pin.
A nail can get it started but it will likely damage the roll pin.
A nail can get it started but it will likely damage the roll pin.