Maybe you unclip/unbolt the seat then unscrew the brackets from captive nuts?
ding ding ding, give that man a banana!
I had a nose last night and there are two little push buttons that detach the seat, under there two silver covers and under there the heads of two flat head screws...
@Crispin_Glover started
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Maybe you unclip/unbolt the seat then unscrew the brackets from captive nuts?