Move srml RPC extensions to separate crates (#3791)

* Move srml-system RPC out.

* Fix tests for system-rpc module.

* Contracts RPC moved.

* Fix rpc test.

* Clean up.

* Update lockfile.

* Bump runtime version.

* Update srml/contracts/rpc/runtime-api/src/lib.rs

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

* Bump impl version.

substrate/node/primitives/src/lib.rs

@@ -20,15 +20,10 @@
 
 #![cfg_attr(not(feature = "std"), no_std)]
 
-use rstd::prelude::*;
 use sr_primitives::{
 	generic, traits::{Verify, BlakeTwo256}, OpaqueExtrinsic, AnySignature
 };
 
-#[cfg(feature = "std")]
-use serde::{Serialize, Deserialize};
-use codec::{Encode, Decode};
-
 /// An index to a block.
 pub type BlockNumber = u32;
 
@@ -72,43 +67,3 @@ pub type BlockId = generic::BlockId<Block>;
 /// Opaque, encoded, unchecked extrinsic.
 pub type UncheckedExtrinsic = OpaqueExtrinsic;
 
-/// A result of execution of a contract.
-#[derive(Eq, PartialEq, Encode, Decode)]
-#[cfg_attr(feature = "std", derive(Debug, Serialize, Deserialize))]
-pub enum ContractExecResult {
-	/// The contract returned successfully.
-	///
-	/// There is a status code and, optionally, some data returned by the contract.
-	Success {
-		/// Status code returned by the contract.
-		status: u8,
-		/// Output data returned by the contract.
-		///
-		/// Can be empty.
-		data: Vec<u8>,
-	},
-	/// The contract execution either trapped or returned an error.
-	Error,
-}
-
-client::decl_runtime_apis! {
-	/// The API to query account account nonce (aka index).
-	pub trait AccountNonceApi {
-		/// Get current account nonce of given `AccountId`.
-		fn account_nonce(account: AccountId) -> Index;
-	}
-
-	/// The API to interact with contracts without using executive.
-	pub trait ContractsApi {
-		/// Perform a call from a specified account to a given contract.
-		///
-		/// See the contracts' `call` dispatchable function for more details.
-		fn call(
-			origin: AccountId,
-			dest: AccountId,
-			value: Balance,
-			gas_limit: u64,
-			input_data: Vec<u8>,
-		) -> ContractExecResult;
-	}
-}