deregister: TxDescriptor<undefined>

Deregister oneself from the fast-unstake.

The dispatch origin of this call must be signed by whoever is permitted to call unbond funds by the staking system. See [Config::Staking].

This is useful if one is registered, they are still waiting, and they change their mind.

Note that the associated stash is still fully unbonded and chilled as a consequence of calling [Pallet::register_fast_unstake]. Therefore, this should probably be followed by a call to rebond in the staking system.

Some events from the staking and currency system might be emitted.