Misc minor fixes. (#2539)

* Fix cargo machete error: remove unused dep.

* Fix grammar: first_nth → first_n

* Move attributes to after the comments.

* Remove redundant prepare_chain calls.

linera-client/src/client_context.rs

@@ -287,7 +287,7 @@ where
         // Try processing the inbox optimistically without waiting for validator notifications.
         let (new_certificates, maybe_timeout) = {
             chain_client.synchronize_from_validators().await?;
-            let result = chain_client.process_inbox().await;
+            let result = chain_client.process_inbox_without_prepare().await;
             self.update_wallet_from_client(chain_client).await?;
             if result.is_err() {
                 self.save_wallet().await?;
@@ -431,7 +431,6 @@ where
         info!("{}", "Bytecode published successfully!");
 
         info!("Synchronizing client and processing inbox");
-        chain_client.synchronize_from_validators().await?;
         self.process_inbox(chain_client).await?;
         Ok(bytecode_id)
     }

linera-core/src/chain_worker/state/temporary_changes.rs

@@ -324,7 +324,7 @@ where
             let keys = chain.confirmed_log.read(start..end).await?;
             info.requested_sent_certificate_hashes = keys;
         }
-        if let Some(start) = query.request_received_log_excluding_first_nth {
+        if let Some(start) = query.request_received_log_excluding_first_n {
             let start = usize::try_from(start).map_err(|_| ArithmeticError::Overflow)?;
             info.requested_received_log = chain.received_log.read(start..).await?;
         }