Bypassing refrigerator door alarm piezoelectric buzzer
When i got tired of my microwave beeping i simply opened it up, located the buzzer on the circuit board and and clipped its two connections, which i then covered with electric tape so that no current could flow.

Has been working great for 4 years now without issue, nor do i see why there would be as long as no current flows, but i'm only a hobbyist.

I'd guess in your case that's the "BUZ1", black hockey puck with a hole in its center, next to the connector with a yellow and red wire. Perhaps you can bend it to expose the connections, or you may need to solder it off.