Remove all data structures concerning a staker/stash once it is at a state where it can
be considered dust in the staking system. The requirements are:
the total_balance of the stash is below existential deposit.
or, the ledger.total of the stash is below existential deposit.
or, existential deposit is zero and either total_balance or ledger.total is zero.
The former can happen in cases like a slash; the latter when a fully unbonded account
is still receiving staking rewards in RewardDestination::Staked.
It can be called by anyone, as long as stash meets the above requirements.
Refunds the transaction fees upon successful execution.
Parameters
num_slashing_spans: Refer to comments on [Call::withdraw_unbonded] for more
details.
Remove all data structures concerning a staker/stash once it is at a state where it can be considered
dustin the staking system. The requirements are:total_balanceof the stash is below existential deposit.ledger.totalof the stash is below existential deposit.total_balanceorledger.totalis zero.The former can happen in cases like a slash; the latter when a fully unbonded account is still receiving staking rewards in
RewardDestination::Staked.It can be called by anyone, as long as
stashmeets the above requirements.Refunds the transaction fees upon successful execution.
Parameters
num_slashing_spans: Refer to comments on [Call::withdraw_unbonded] for more details.