Doubt in BST Remove method given in CB videos

https://online.codingblocks.com/app/player/59043/content/43381/689/lecture?code=lE4FGH0jDzzOLCJtVd553AEICjzsrXS5
In this video mam defined remove method with 4 parameters(node,parent,ilc,item) but when she is calling his remove method from main she is passing only 1 parameter item.
So,how is remove function giving output with only one parameter?