thinset removal from top of tile

[jay]

I have some thinset that has been spilled onto the top of some tile. I need to remove this before I grout. I was thinking of a muratic acid wash to get it off. It is a thin layer that was not completely wiped from the joints of a 2×2 tile floor. I started scrping but I think I would redo the tile before doing this, And I dont want to do that!