Need help with how to remove a gate hinge pin.

[rgG]

I need to remove this gate panel.
It has a self closing hinge.
I can’t unscrew the whole assembly, because I can’t open the gate and the hinge is screwed to the outside and the inside of the post.
Do you think this pin just unscrews?
I think it has a spring inside. The bottom has the same slotted area as the top.
I have never removed a hinge pin that looked like this.
There are two of these butterfly type hinges on the gate, so I need to remove both pins.

Any help will be appreciated.