When I did it, I drilled out one end of the pin with a drill bit a bit smaller diameter than the pin (this was to thin down the metal in the expanded portion of the pin).
I then cut off the drill bit flutes with a grinder and used the shank and a clamp to force the pin out.
There may be an easier way, but that's what my cat told me to do and it turned out fine.
When I did it, I drilled out one end of the pin with a drill bit a bit smaller diameter than the pin (this was to thin down the metal in the expanded portion of the pin).
I then cut off the drill bit flutes with a grinder and used the shank and a clamp to force the pin out.
There may be an easier way, but that's what my cat told me to do and it turned out fine.