Fix node template build issue (#3570)

* fix unused var warning

* fix node-tempalte build issue

substrate/core/authority-discovery/Cargo.toml

@@ -9,7 +9,7 @@ build = "build.rs"
 prost-build = "0.5"
 
 [dependencies]
-authority-discovery-primitives = { package = "substrate-authority-discovery-primitives", path = "./primitives", default-features = false }
+authority-discovery-primitives = { package = "substrate-authority-discovery-primitives", path = "./primitives" }
 bytes = "0.4"
 client = { package = "substrate-client", path = "../../core/client" }
 codec = { package = "parity-scale-codec", default-features = false, version = "1.0.3" }

substrate/node-template/src/service.rs

@@ -6,7 +6,7 @@ use substrate_client::LongestChain;
 use babe::{import_queue, start_babe, Config};
 use grandpa::{self, FinalityProofProvider as GrandpaFinalityProofProvider};
 use futures::prelude::*;
-use node_template_runtime::{self, GenesisConfig, opaque::Block, RuntimeApi, WASM_BINARY};
+use node_template_runtime::{self, GenesisConfig, opaque::Block, RuntimeApi};
 use substrate_service::{error::{Error as ServiceError}, AbstractService, Configuration, ServiceBuilder};
 use transaction_pool::{self, txpool::{Pool as TransactionPool}};
 use inherents::InherentDataProviders;