You do not want to reinstall them. And so you should not click on the Restore All button.
That is in the Undo section. The Undo section lists all of the items that were cleaned from your computer. The Undo section is for undoing the cleaning. You should not undo the cleaning unless the cleaning has caused a problem. As it says at the top of the Undo section, "To undo the cleaning, use the Restore buttons below." If you do not want to undo the cleaning, please do not click on the Restore buttons.