use table.copy instead of clone-node

init.lua

@@ -36,17 +36,6 @@ else
 end
 moretrees.intllib = S
 
--- clone node
-
-function moretrees.clone_node(name)
-	local node2 = {}
-	local node = minetest.registered_nodes[name]
-	for k,v in pairs(node) do
-		node2[k]=v
-	end
-	return node2
-end
-
 -- infinite stacks checking
 
 if minetest.get_modpath("unified_inventory") or not