Installed Rockbox on my sansa e250r and it was great and loved it while it lasted but i broke the screen on it

i ended up taking rockbox off of it and trying to just play music hit and miss hoping i would be able to select something and play it but that was too frusterating.
So i took everything off of it including the LCD so not its just the board and stuff and it works great for mass storage.
Question:
Can i remove the sandisk firmware so it will act just like a usb storage device and not have the typical folders and stuf that you can never get off?