Remove unused forward_worker module (#3128)

* Remove unused `forward_worker` module
* Remove `ForwardWork`

core/src/banking_stage.rs

@@ -65,7 +65,6 @@ pub mod unprocessed_transaction_storage;
 mod consume_worker;
 mod decision_maker;
 mod forward_packet_batches_by_accounts;
-mod forward_worker;
 mod immutable_deserialized_packet;
 mod latest_unprocessed_votes;
 mod leader_slot_timing_metrics;
@@ -74,7 +73,6 @@ mod packet_deserializer;
 mod packet_filter;
 mod packet_receiver;
 mod read_write_account_set;
-#[allow(dead_code)]
 mod scheduler_messages;
 mod transaction_scheduler;
 

core/src/banking_stage/scheduler_messages.rs

@@ -1,7 +1,6 @@
 use {
-    super::immutable_deserialized_packet::ImmutableDeserializedPacket,
     solana_sdk::{clock::Slot, transaction::SanitizedTransaction},
-    std::{fmt::Display, sync::Arc},
+    std::fmt::Display,
 };
 
 /// A unique identifier for a transaction batch.
@@ -45,22 +44,9 @@ pub struct ConsumeWork {
     pub max_age_slots: Vec<Slot>,
 }
 
-/// Message: [Scheduler -> Worker]
-/// Transactions to be forwarded to the next leader(s)
-pub struct ForwardWork {
-    pub packets: Vec<Arc<ImmutableDeserializedPacket>>,
-}
-
 /// Message: [Worker -> Scheduler]
 /// Processed transactions.
 pub struct FinishedConsumeWork {
     pub work: ConsumeWork,
     pub retryable_indexes: Vec<usize>,
 }
-
-/// Message: [Worker -> Scheduler]
-/// Forwarded transactions.
-pub struct FinishedForwardWork {
-    pub work: ForwardWork,
-    pub successful: bool,
-}