(state-trie-migration) adapt paritytech/polkadot-sdk#1801 (RuntimeHol…

…dReason)

relay/kusama/src/lib.rs

@@ -1488,6 +1488,7 @@ parameter_types! {
 impl pallet_state_trie_migration::Config for Runtime {
 	type RuntimeEvent = RuntimeEvent;
 	type Currency = Balances;
+	type RuntimeHoldReason = RuntimeHoldReason;
 	type SignedDepositPerItem = MigrationSignedDepositPerItem;
 	type SignedDepositBase = MigrationSignedDepositBase;
 	type ControlOrigin = EnsureRoot<AccountId>;
@@ -2740,8 +2741,6 @@ mod init_state_migration {
 	use super::Runtime;
 	use frame_support::traits::OnRuntimeUpgrade;
 	use pallet_state_trie_migration::{AutoLimits, MigrationLimits, MigrationProcess};
-	#[cfg(not(feature = "std"))]
-	use sp_std::prelude::*;
 
 	/// Initialize an automatic migration process.
 	pub struct InitMigrate;