You can't. You can re-arrange them so that the ones you want are at the top using select, though.
you can't delet key items in any Pokemon games.
The Secret Key that you get in the Pokemon Mansion is used to enter the Cinnabar Gym.
You will find the key to the Gym of Cinnabar Island, From the Pokemon Mansion that is on the same island.
You have to find the key in the abandoned mansion.
On the 5th floor of silph co.
All HM's are in the TM case which is in the key items pocket of your bag.
You can unregister them but you can't remove them from your pack
Key items are impossible to trade or remove, except to Pokémon Colosseum.
The key to the gym
you get it by searching for it for yourslf
the key is in the basement
You can just get a gameshark.All you need to do is pick: * Access MOD Shop (L+A+Sel) * All Key Items (Part 1) * All Key Items (Part 2) Then press start and there you go!
To remove key items in Pokémon Emerald using cheats, you can use a GameShark code. One common code is "BFF956FA 2F9EC50D," which allows you to remove key items from your inventory. Activate the cheat, and then access your bag; the key items should be removed. Remember to disable the cheat after use to avoid unintended effects.
In Pokémon LeafGreen, key items can be found throughout the game, but one of the most important is the Fame Checker, which you receive from an NPC in the Pokémon Center in Celadon City. Other key items, like the Bicycle, can be obtained from the Bike Shop in Cerulean City after you have enough badges. Additionally, some key items are hidden in various locations, requiring exploration and interaction with NPCs.
i think it's at the basement floor on a table.
you must go into the old mansion on the island and search for the key. the mansion is inhabbated by a couple Pokemon such as vulpix to muk it also has many items and trickey door locks
it is impossible to do that unless you start the game over again and don't collect the item you don't want