Remove node-api (#804)

* Remove `node-api` from `node-consensus` and `node-transaction-pool`

* Remove the `node-api` crate and its last usages

* Remove left over file

* Fixes compilation errors

* Switch to `As` trait

* Rename trait

* Whitespace

substrate/node/network/src/consensus.rs

@@ -22,8 +22,7 @@ use bft;
 use substrate_primitives::ed25519;
 use substrate_network::{self as net, generic_message as msg};
 use substrate_network::consensus_gossip::ConsensusMessage;
-use node_api::Api;
-use node_consensus::Network;
+use node_consensus::{AuthoringApi, Network};
 use node_primitives::{Block, Hash, SessionKey};
 use rhododendron;
 
@@ -248,12 +247,13 @@ impl<P> Clone for ConsensusNetwork<P> {
 }
 
 /// A long-lived network which can create parachain statement and BFT message routing processes on demand.
-impl<P: Api + Send + Sync + 'static> Network for ConsensusNetwork<P> {
+impl<P: AuthoringApi + Send + Sync + 'static> Network for ConsensusNetwork<P> {
 	/// The input stream of BFT messages. Should never logically conclude.
 	type Input = InputAdapter;
 	/// The output sink of BFT messages. Messages sent here should eventually pass to all
 	/// current validators.
 	type Output = BftSink<::node_consensus::Error>;
+	type Block = Block;
 
 	/// Get input and output streams of BFT messages.
 	fn communication_for(

substrate/node/network/src/lib.rs

@@ -24,7 +24,6 @@ extern crate substrate_bft as bft;
 extern crate substrate_network;
 extern crate substrate_primitives;
 
-extern crate node_api;
 extern crate node_consensus;
 extern crate node_primitives;
 
@@ -114,4 +113,3 @@ impl Specialization<Block> for Protocol {
 	fn on_block_imported(&mut self, _ctx: &mut Context<Block>, _hash: Hash, _header: &Header) {
 	}
 }
-