Do not broadcast a proposal block when it's verified

Every node uses the pull gossip, so there's no reason to broadcast.

Author: Hyunsik Jeong

core/src/consensus/tendermint/mod.rs

@@ -725,10 +725,6 @@ impl TendermintInner {
         self.broadcast_proposal_block(encoded::Block::new(sealed_block.rlp_bytes()));
     }
 
-    fn on_verified_proposal(&self, verified_block_data: encoded::Block) {
-        self.broadcast_proposal_block(verified_block_data);
-    }
-
     fn verify_block_basic(&self, header: &Header) -> Result<(), Error> {
         let seal_length = header.seal().len();
         let expected_seal_fields = self.seal_fields(header);
@@ -1207,11 +1203,6 @@ impl ConsensusEngine<CodeChainMachine> for Tendermint {
         guard.is_proposal(header)
     }
 
-    fn on_verified_proposal(&self, verified_block_data: encoded::Block) {
-        let guard = self.inner.lock();
-        guard.on_verified_proposal(verified_block_data)
-    }
-
     fn set_signer(&self, ap: Arc<AccountProvider>, address: Address, password: Option<Password>) {
         let mut guard = self.inner.lock();
         guard.set_signer(ap, address, password)