[Fix] Remove redundant stash from Stake

frame/staking/src/pallet/impls.rs

@@ -1611,7 +1611,7 @@ impl<T: Config> StakingInterface for Pallet<T> {
 	fn stake(who: &Self::AccountId) -> Result<Stake<Self>, DispatchError> {
 		Self::bonded(who)
 			.and_then(|c| Self::ledger(c))
-			.map(|l| Stake { stash: l.stash, total: l.total, active: l.active })
+			.map(|l| Stake { total: l.total, active: l.active })
 			.ok_or(Error::<T>::NotStash.into())
 	}
 

primitives/staking/src/lib.rs

@@ -58,8 +58,6 @@ impl<AccountId, Balance> OnStakerSlash<AccountId, Balance> for () {
 /// A struct that reflects stake that an account has in the staking system. Provides a set of
 /// methods to operate on it's properties. Aimed at making `StakingInterface` more concise.
 pub struct Stake<T: StakingInterface + ?Sized> {
-	/// The stash account whose balance is actually locked and at stake.
-	pub stash: T::AccountId,
 	/// The total stake that `stash` has in the staking system. This includes the
 	/// `active` stake, and any funds currently in the process of unbonding via
 	/// [`StakingInterface::unbond`].