update rococo and remove cursed BEEFY migration (#2870)

* update rococo and remove cursed BEEFY migration

* remove migration

* tweak VERSION

polkadot/runtime/rococo/src/lib.rs

@@ -108,9 +108,9 @@ include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
 /// Runtime version (Rococo).
 pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("rococo"),
-	impl_name: create_runtime_str!("parity-rococo-v1-1"),
+	impl_name: create_runtime_str!("parity-rococo-v1.5"),
 	authoring_version: 0,
-	spec_version: 228,
+	spec_version: 231,
 	impl_version: 0,
 	#[cfg(not(feature = "disable-runtime-api"))]
 	apis: RUNTIME_API_VERSIONS,
@@ -167,23 +167,11 @@ pub type Executive = frame_executive::Executive<
 	frame_system::ChainContext<Runtime>,
 	Runtime,
 	AllPallets,
-	UpgradeSessionKeys,
+	(),
 >;
 /// The payload being signed in transactions.
 pub type SignedPayload = generic::SignedPayload<Call, SignedExtra>;
 
-// TODO [ToDr] Remove while BEEFY runtime upgrade is done.
-impl_opaque_keys! {
-	pub struct OldSessionKeys {
-		pub grandpa: Grandpa,
-		pub babe: Babe,
-		pub im_online: ImOnline,
-		pub para_validator: Initializer,
-		pub para_assignment: SessionInfo,
-		pub authority_discovery: AuthorityDiscovery,
-	}
-}
-
 impl_opaque_keys! {
 	pub struct SessionKeys {
 		pub grandpa: Grandpa,
@@ -196,27 +184,6 @@ impl_opaque_keys! {
 	}
 }
 
-fn transform_session_keys(v: AccountId, old: OldSessionKeys) -> SessionKeys {
-	SessionKeys {
-		grandpa: old.grandpa,
-		babe: old.babe,
-		im_online: old.im_online,
-		para_validator: old.para_validator,
-		para_assignment: old.para_assignment,
-		authority_discovery: old.authority_discovery,
-		beefy: runtime_common::dummy_beefy_id_from_account_id(v),
-	}
-}
-
-// When this is removed, should also remove `OldSessionKeys`.
-pub struct UpgradeSessionKeys;
-impl frame_support::traits::OnRuntimeUpgrade for UpgradeSessionKeys {
-	fn on_runtime_upgrade() -> frame_support::weights::Weight {
-		Session::upgrade_keys::<OldSessionKeys, _>(transform_session_keys);
-		Perbill::from_percent(50) * BlockWeights::get().max_block
-	}
-}
-
 construct_runtime! {
 	pub enum Runtime where
 		Block = Block,