Deprecate more Fee/Blockhash APIs (#21140)

banks-server/src/banks_server.rs

@@ -281,6 +281,22 @@ impl Banks for BanksServer {
         bank.get_account(&address).map(Account::from)
     }
 
+    async fn get_latest_blockhash_with_context(self, _: Context) -> Hash {
+        let bank = self.bank(CommitmentLevel::default());
+        bank.last_blockhash()
+    }
+
+    async fn get_latest_blockhash_with_commitment_and_context(
+        self,
+        _: Context,
+        commitment: CommitmentLevel,
+    ) -> Option<(Hash, u64)> {
+        let bank = self.bank(commitment);
+        let blockhash = bank.last_blockhash();
+        let last_valid_block_height = bank.get_blockhash_last_valid_block_height(&blockhash)?;
+        Some((blockhash, last_valid_block_height))
+    }
+
     async fn get_fee_for_message_with_commitment_and_context(
         self,
         _: Context,