[JRTJH]

If you only use "city water" you do not need to have the pump installed. If you remove it or disconnect it, you'll need to cap the line that "T's" from the city water supply to the pump head so it won't leak into the camper.

Keep in mind that everything you do to "undo the OEM configuration" will detract from resale value should you ever want to trade it in or sell it. Other that possible reduced value, there's no reason not to eliminate the water pump.