Remove lock around JsonRpcRequestProcessor (#10417)

automerge

Author: garious

core/src/rpc.rs

@@ -1314,10 +1314,7 @@ impl RpcSol for RpcSolImpl {
         let faucet_addr = meta.config.faucet_addr.ok_or_else(Error::invalid_request)?;
         let pubkey = verify_pubkey(pubkey_str)?;
 
-        let blockhash = meta
-            .bank(commitment)?
-            .confirmed_last_blockhash()
-            .0;
+        let blockhash = meta.bank(commitment)?.confirmed_last_blockhash().0;
         let transaction = request_airdrop_transaction(&faucet_addr, &pubkey, lamports, blockhash)
             .map_err(|err| {
             info!("request_airdrop_transaction failed: {:?}", err);