Statemine primitives (#1625)

* Statemine primitives

* ref issue in TODO

* fix TODO

bridges/primitives/chain-westend/Cargo.toml

@@ -7,8 +7,6 @@ edition = "2021"
 license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "3.1.5", default-features = false, features = ["derive"] }
-scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
 
 # Bridge Dependencies
 
@@ -18,15 +16,11 @@ bp-runtime = { path = "../runtime", default-features = false }
 # Substrate Based Dependencies
 
 sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
-sp-runtime = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 
 [features]
 default = ["std"]
 std = [
 	"bp-polkadot-core/std",
 	"bp-runtime/std",
-	"codec/std",
-	"scale-info/std",
 	"sp-api/std",
-	"sp-runtime/std",
 ]

bridges/primitives/chain-westend/src/lib.rs

@@ -18,34 +18,12 @@
 // RuntimeApi generated functions
 #![allow(clippy::too_many_arguments)]
 
-use scale_info::TypeInfo;
-
 pub use bp_polkadot_core::*;
 use bp_runtime::decl_bridge_finality_runtime_apis;
 
 /// Westend Chain
 pub type Westend = PolkadotLike;
 
-/// Westend Runtime `Call` enum.
-///
-/// We are not currently submitting any Westend transactions => it is empty.
-#[derive(codec::Encode, codec::Decode, Debug, PartialEq, Eq, Clone, TypeInfo)]
-pub enum Call {}
-
-impl sp_runtime::traits::Dispatchable for Call {
-	type RuntimeOrigin = ();
-	type Config = ();
-	type Info = ();
-	type PostInfo = ();
-
-	fn dispatch(
-		self,
-		_origin: Self::RuntimeOrigin,
-	) -> sp_runtime::DispatchResultWithInfo<Self::PostInfo> {
-		unimplemented!("The Call is not expected to be dispatched.")
-	}
-}
-
 /// Name of the parachains pallet at the Westend runtime.
 pub const PARAS_PALLET_NAME: &str = "Paras";
 
@@ -54,13 +32,6 @@ pub const WITH_WESTEND_GRANDPA_PALLET_NAME: &str = "BridgeWestendGrandpa";
 /// Name of the With-Westend parachains bridge pallet instance that is deployed at bridged chains.
 pub const WITH_WESTEND_BRIDGE_PARAS_PALLET_NAME: &str = "BridgeWestendParachains";
 
-/// The target length of a session (how often authorities change) on Westend measured in of number
-/// of blocks.
-///
-/// Note that since this is a target sessions may change before/after this time depending on network
-/// conditions.
-pub const SESSION_LENGTH: BlockNumber = 10 * time_units::MINUTES;
-
 /// Maximal number of GRANDPA authorities at Westend.
 ///
 /// Corresponds to the `MaxAuthorities` constant value from the Westend runtime configuration.