Maybe in the future when everyone is using bitcoin as a payment the banks will disappear and maybe the money too but that would not happen do you really think that the banks will let that happen? no they will not.
Banks will stay in some form or another. Recently there was some buzz about Bitcoin Banks maybe there will Bitcoin banks which will help to understand and solve issues people are facing regarding Bitcoin or something else. On the other side banks are important part of the system and investors who have invested a greater sum of money in Banks will try every possible methods that Banks dominate the society.