Which king cut up Jeremiah's scroll and burned it in the fire?

Answer: Jehoiakim

As the scroll was read, King Jehoiakim cut off the columns with a scribe's knife and threw them into the firepot until all was burned.

“Since it was the ninth month, the king was sitting in his winter quarters with a fire burning before him. And as soon as Jehudi had read three or four columns, Jehoiakim would cut them off with a scribe’s knife and throw them into the firepot, until the entire scroll had been consumed by the fire.”— Jeremiah 36:22-23 (BSB)