Afaik there is no way. You might be able to do it by copying some files, but I don't think that would work flawlessly.
Reason:
The Single Player Combat Training is actually not a tutorial - it's basically the very first alpha version that people got to play. I don't know if this is a slightly upgraded version, but the result is the same: the settings and the game have changed a lot from that early single player version. The actual tutorials regarding docking and so forth can be played within the full game.
The only reason the combat training is even listed in the launcer is because people who preordered the full game where allowed to play single player until release. They should have probably hidden that option a little bit on release, so that people would not be confused.