I know this is a very short video, but this is to show the concept of Wire Removal OR Rig Removal in Nuke.
In this video I have used clean Plate(BG) behind the original footage. Using clone option from Rotopaint node Removed the wire from the footage and attached BG or clean plate, so finally the wire or rig is removed from the scene.
Software used: NukeX 9.0.2