Is there a way to mass unassign item locators?

We are currently in the process of restructuring our storerooms, and I need to change the locator for every item. We have 8 storerooms and each has about 1000-2000 items. Does anyone know of a way to unassign their current locators without having to do it manually? The only way I know how to do it is going one by one and hitting the "X" (see attached). Thank you!