If it was a problem it would probably have manifested itself before now. I don't think you have anything to worry about. Consider this: there are a LOT of chrome front ends under hotrods that have been on the road for years with no problems... More specifically, hydrogen embrittlement only takes place on the surface and a few thousandths of an inch deep. It is usually only a problem on lighter weight parts that are under a lot of stress. Years ago, chrome plating was banned on suspension componenets for Indy cars. Those parts are made to be as light as possible (thin tubing) and are under a lot of stress. The axle under your Deuce is probably .250-wall tubing, 2 or 3 times stronger than it needs to be, so that it can give many years of trouble free use. Drive it and enjoy it.

As far as I know, there is no way to reverse the process.