I'm not trying to help you to cut your foot off nor break any law if there is such a thing (probably just a cya on the part of the OEM) on this issue but if you don't have a mowing deck on your lawn tractor as I don't on my JD L110 which I use as my Gator, I don't need nor want a seat safety switch.
On the mower mentioned the first clue that somebody tried to outsmart you is the fact that there are 3 wires to the connection which is a "single pole" function. A single pole function only requires 2 wires.
The second thing is that besides 3 wires to the connector there is a jumper.....5 wires to do a 2 wire job. The gadget is inside the wiring harness connector (have to know it's there and look very closely) and is a thin, flat, sliver of metal that connects between some of the 5 wires. If that piece of metal isn't in the connector, as is now the case with mine, the connector can lie loose (not plugged in) and the seat switch will be disabled.
This is sneaky as the two normal (seems to me) thoughts would be that the switch either opens or closes upon seat weight; as I said, single pole function, either open or closed, 1 or 0 type thing, 2 wire circuit. Fine if it's an open when in the seat, cut one wire to force an "in the seat" condition . If closes when in the seat, take a couple of blade terminals and a jumper wire and jump across the 2 wires to the seat to simulate that with the connector disconnected from the seat connector.
Again, YOUR disconnecting of any of YOUR safety devices is purely YOUR decision!!!!!!! I'm merely telling you that I had the annoyance of a seat safety switch that I didn't need nor want and what I did about it. My switch, my L110, my life, my decision.