162. Did Joshua remove the twelve stones from the Jordan River?

Yes, he took them to Gilgal.

And those twelve stones, which they took out of Jordan, did Joshua pitch in Gilgal. Joshua 4:20

No, they are still there.

And Joshua set up twelve stones in the midst of Jordan, in the place where the feet of the priests which bare the ark of the covenant stood: and they are there unto this day. Joshua 4:9