another players claim near mine

Hi, a player named darkshadow012m had claimed a piece of land next to my newly claimed land. He had claimed that land before i claimed land near his. I've not seen that player online for a long time so is it possible to remove that claim so i can claim it and build on it?

send xyz of this location

X: -8542.411
Y: 67.00000
Z: 9233.381

send xyz of this location

done removed the claim.