minetest.clear craft

minetest.clear_craft(recipe)
 * Will erase existing craft based either on output item or on input recipe.
 * Specify either output or input only. If you specify both, input will be ignored. For input use the same recipe table syntax as for `minetest.register_craft(recipe)`. For output specify only the item, without a quantity.
 * If no erase candidate could be found, Lua exception will be thrown.
 * Warning! The type field ("shaped","cooking" or any other) will be ignored if the recipe contains output. Erasing is then done independently from the crafting method.