Yes, but you can't get the TM back. Go to the Move Deleter (he's in certain places in the game, but I forgot where) and ask him to delete the move. If it's a TM and not an HM (which you wouldn't need to get back anyway, they're unlimited use), you can also just teach it another move to replace it.
There is no Ancient Power TM in Pokemon Platinum, It can only be taught by leveling up, Move tutoring or by learning it from a Pokemon from an egg.
it isn't a TM it has to be taught the hard way...training
Kecleon and Mightyena learn it while leveling up. Almost every other Pokemon can be taught the TM thief.
I don't think that it is a TM in Heartgold or Soulsilver Versions, but it can be taught to your Pokemon by a move tutor in a small house outside of the battle frontier.
Yes, but you can't get the TM back. Go to the Move Deleter (he's in certain places in the game, but I forgot where) and ask him to delete the move. If it's a TM and not an HM (which you wouldn't need to get back anyway, they're unlimited use), you can also just teach it another move to replace it.
it is a TM taught to Pokemon do you mean hiddden ability?
Yes, as long as the Pokemon is compatible with the TM. Pokemon can be taught TMs at any level.
This skill has to be taught to your Pokemon using a TM that you get as a reward on your journey
There is no Ancient Power TM in Pokemon Platinum, It can only be taught by leveling up, Move tutoring or by learning it from a Pokemon from an egg.
it isn't a TM it has to be taught the hard way...training
First of all, CUT is not a TM it's an HM. And second of all, Pokemon cannot learn that move naturally so it must be taught to Pokemon with an HM.
Kecleon and Mightyena learn it while leveling up. Almost every other Pokemon can be taught the TM thief.
Waterfall is a TM/HM. It needs to be obtained from the Sunyshore Gym Leader before it can be taught to a water-type pokemon.
Zigzagoon can be taught Dig at any level once you have TM 28. TM 28 can be found in Route 114.
I don't think that it is a TM in Heartgold or Soulsilver Versions, but it can be taught to your Pokemon by a move tutor in a small house outside of the battle frontier.
Three of them is the best. But the onnly thing you should know is: Their Moves. It is important to teach them TM/HM Because If you choose the wrong TM/HM your Pokemon will eventually become weak.