That picture looks more like a galvanized iron pipe than copper. That is surprising for a house built in the 70's. Where does the iron portion end?
What is the copper wire grounding? Your picture looks more like a 1/4 copper tube than a copper wire, perhaps a primer tube for a floor drain or a supply for an icemaker?
You don't really need to chip out the concrete. You can probably knock the pipe loose with a hammer once you get the fittings off.