Remove v0 parachains runtime (#1501)

* remove v0 parachains modules and switch to v1 primitives

* get tests compiling for runtime-common

* remove registrar module

* Add a dummy module

* remove runtime-parachains

* mostly remove old parachains code from polkadot-runtime

* remove slots::Trait implementation

* remove sp_std prelude import

* add a ZeroSizedTypeDifferentiator to dummy

* finish porting over polkadot runtime

* ZeroSizedTypeDifferentiator was actually unnecessary

* westend

* kusama

* test-runtime (no dummy modules)

* fix warning

* fix chain-specs

* fix test-service

* test-client

* remove dead import

* remove unused needed_extrinsics parameter

* runtimes compile

* remove rococo-v0

* remove remaining references to Rococo

* bump versions

polkadot/primitives/src/v1.rs

@@ -705,6 +705,25 @@ sp_api::decl_runtime_apis! {
 	}
 }
 
+/// Custom validity errors used in Polkadot while validating transactions.
+#[repr(u8)]
+pub enum ValidityError {
+	/// The Ethereum signature is invalid.
+	InvalidEthereumSignature = 0,
+	/// The signer has no claim.
+	SignerHasNoClaim = 1,
+	/// No permission to execute the call.
+	NoPermission = 2,
+	/// An invalid statement was made for a claim.
+	InvalidStatement = 3,
+}
+
+impl From<ValidityError> for u8 {
+	fn from(err: ValidityError) -> Self {
+		err as u8
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use super::*;