you can't sorry. Only tms can be removed.
^ This guy's an idiot.
You CAN delete HM's in Platinum.
Go to Canalave City. There's a house with an old man inside, he makes your Pokemon forget the HM of your choosing.
^
this guy is right.
but you must defeat crasher wake from pastoria city Pokemon gym first.
steal other players flags, when you get enough you can remove boulders
There is no "HM" mean look.
He is in canalave city in the house right below the Pokemon centre
Just learn it the HM Cut
The house above the pokeshope in canalav city
skill i think you mean hm then you need to go to fushia city then the house beside the Pokemon center
To remove an HM you have to go to Lilycove city. There's a guy in the house next to the department store who deletes moves.
The HM Whirlpool is not obtainable in Pokemon Platinum, for there is no use for it during gameplay.
Dig is not a HM in Pokemon Platinum but a TM, it can be found in the ruin maniacs cave.
in a Pokemon center
Select the Hm hit use and select Pokemon
In Pokemon Platinum, Flash is a TM.
you can get it in pokemon platinum!
its not an HM anymore you have to find it.
Surf is HM #3. :-)
steal other players flags, when you get enough you can remove boulders
its a hm and its called strength