Revert "move wool recipe out of this mod"

This reverts commit fecd65b5.

items.lua

@@ -32,6 +32,7 @@ minetest.register_craft({
 	}
 })
 minetest.register_craft({output = "default:flint",recipe = {{"default:gravel"},}})
+minetest.register_craft({output = "farming:cotton 4",recipe = {{"group:wool"},}})
 
 bows.register_bow("bow_wood",{
 	description="Wooden bow",