Remove deprecated, unused methods from Bank (#1980)

Remove deprecated methods from Bank (not in use)

runtime/src/bank.rs

@@ -3079,11 +3079,6 @@ impl Bank {
         blockhash_queue.get_lamports_per_signature(hash)
     }
 
-    #[deprecated(since = "1.9.0", note = "Please use `get_fee_for_message` instead")]
-    pub fn get_fee_rate_governor(&self) -> &FeeRateGovernor {
-        &self.fee_rate_governor
-    }
-
     pub fn get_fee_for_message(&self, message: &SanitizedMessage) -> Option<u64> {
         let lamports_per_signature = {
             let blockhash_queue = self.blockhash_queue.read().unwrap();
@@ -3137,19 +3132,6 @@ impl Bank {
         )
     }
 
-    #[deprecated(
-        since = "1.6.11",
-        note = "Please use `get_blockhash_last_valid_block_height`"
-    )]
-    pub fn get_blockhash_last_valid_slot(&self, blockhash: &Hash) -> Option<Slot> {
-        let blockhash_queue = self.blockhash_queue.read().unwrap();
-        // This calculation will need to be updated to consider epoch boundaries if BlockhashQueue
-        // length is made variable by epoch
-        blockhash_queue
-            .get_hash_age(blockhash)
-            .map(|age| self.slot + MAX_PROCESSING_AGE as u64 - age)
-    }
-
     pub fn get_blockhash_last_valid_block_height(&self, blockhash: &Hash) -> Option<Slot> {
         let blockhash_queue = self.blockhash_queue.read().unwrap();
         // This calculation will need to be updated to consider epoch boundaries if BlockhashQueue