Why remove it?
Really, just leave it there, and remove the wires going from one of the circuit breakers to that converter, and it will act as it is disconnected, but you will still be able to use the circuit breakers, 12 volt fuses, and it will not get in your way.
Buy a new 'converter' that is actually a 45 - 65 amp battery charger. You can install it anyplace that is easy to get to, and run some #8 wire from it's output to the old converter fuse panel. And also install some romex (about 3-5 feet should work fine) and a new receptacle to plug the new converter/charger into it. The new converter will come with a power cord, and plug in easy.
I did this to a 1985 Winnebago class C. If you need help installing the new receptacle, ask someone at the hardware store where you pick up the electric box, wire and receptacle. It is very simple, and if you can do a dot to dot drawing, you can do the 3 wires and 6 wire connections to install a new receptacle. Really, just the white wire connects inside the area near the circuit breaker with all the other white wires. Bare copper wire to where all the other bare copper wires are connected. Black wire to the location that the old converter was connected (on one of the 15 or 20 amp circuit breakers) and on the other end of the romex the green screw is for the bare copper wire, black wire onto the brass screw, silver screw for the white wire. So much easier than a dot to dot drawing, they are even color coded, and you just follow the simple directions.
BestConverter.com is one location that seems to offer great prices and wonderful advice. Call them if you have any difficulty deciding on a model, or accessory, such as the need for a charge wizard.
Good luck!
Fred.