I go into Network Connections, where I have I have two connections "NETWORK76" and "NETWORK76 1", I delete connection "NETWORK76 1". I then connect to "NETWORK76" and find "NETWORK76 1" has reappeared in Network Connections!
I've tried deleting "NETWORK76 1" in etc/NetworkManager, but that doesn't work, the file gets restored (but I guess you know that). So I guess I've got to go back a level to find the script (is it?) that's restoring the file.
 The connections are the same. I just want to get rid of one of them.