Who killed Wolverine ?

The Wolverine (2013)

When Wolverine’s Healing Powers Run Out because of adamantium poisoning in Logan (2017) 

Wolverine Gets Too Weak Because of this 

he cannot heal himself as before. 

And when Xander Rice sends the X-24 to kill the X-23, Wolverine comes between them. For this reason, there is a fight between the X-24 and Wolverine. 

But at that time Wolverine runs away with the X-23 

But when the X-24 and Wolverine meet for the second time, he kills Wolverine 

and then the X-23 kills the X-24 with adamantium bullet 

But by the time the X-23 goes to rescue Wolverine, Wolverine is already dead. 

Marvel DC Crossover