Companion for substrate#9448 (#3527)

* Companion for substrate#9448

* fix on_disabled

* use temporary beefy branch

* revert beefy updates

* update Substrate

Co-authored-by: Andronik Ordian <write@reusable.software>
Co-authored-by: parity-processbot <>

polkadot/runtime/rococo/src/lib.rs

@@ -55,7 +55,7 @@ use sp_runtime::{
 		OpaqueKeys, SaturatedConversion, Verify,
 	},
 	transaction_validity::{TransactionPriority, TransactionSource, TransactionValidity},
-	ApplyExtrinsicResult, KeyTypeId, Perbill,
+	ApplyExtrinsicResult, KeyTypeId,
 };
 use sp_staking::SessionIndex;
 use sp_std::{collections::btree_map::BTreeMap, prelude::*};
@@ -465,10 +465,6 @@ impl pallet_transaction_payment::Config for Runtime {
 	type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;
 }
 
-parameter_types! {
-	pub const DisabledValidatorsThreshold: Perbill = Perbill::from_percent(17);
-}
-
 /// Special `ValidatorIdOf` implementation that is just returning the input as result.
 pub struct ValidatorIdOf;
 impl sp_runtime::traits::Convert<AccountId, Option<AccountId>> for ValidatorIdOf {
@@ -486,7 +482,6 @@ impl pallet_session::Config for Runtime {
 	type SessionManager = pallet_session::historical::NoteHistoricalRoot<Self, ValidatorManager>;
 	type SessionHandler = <SessionKeys as OpaqueKeys>::KeyTypeIdProviders;
 	type Keys = SessionKeys;
-	type DisabledValidatorsThreshold = DisabledValidatorsThreshold;
 	type WeightInfo = ();
 }