Remove unused submitToMemoryPool and relayTransactions Chain interfaces

Author: Antoine Riard

src/interfaces/chain.cpp

@@ -151,12 +151,6 @@ class LockImpl : public Chain::Lock, public UniqueLock<CCriticalSection>
         LockAssertion lock(::cs_main);
         return CheckFinalTx(tx);
     }
-    bool submitToMemoryPool(const CTransactionRef& tx, CAmount absurd_fee, CValidationState& state) override
-    {
-        LockAssertion lock(::cs_main);
-        return AcceptToMemoryPool(::mempool, state, tx, nullptr /* missing inputs */, nullptr /* txn replaced */,
-            false /* bypass limits */, absurd_fee);
-    }
 
     using UniqueLock::UniqueLock;
 };
@@ -292,10 +286,6 @@ class ChainImpl : public Chain
         auto it = ::mempool.GetIter(txid);
         return it && (*it)->GetCountWithDescendants() > 1;
     }
-    void relayTransaction(const uint256& txid) override
-    {
-        RelayTransaction(txid, *g_connman);
-    }
     bool broadcastTransaction(const CTransactionRef& tx, std::string& err_string, const CAmount& max_tx_fee, bool relay) override
     {
         const TransactionError err = BroadcastTransaction(tx, err_string, max_tx_fee, relay, /*wait_callback*/ false);

src/interfaces/chain.h

@@ -43,10 +43,6 @@ class Wallet;
 //!   asynchronously
 //!   (https://github.com/bitcoin/bitcoin/pull/10973#issuecomment-380101269).
 //!
-//! * The relayTransactions() and submitToMemoryPool() methods could be replaced
-//!   with a higher-level broadcastTransaction method
-//!   (https://github.com/bitcoin/bitcoin/pull/14978#issuecomment-459373984).
-//!
 //! * The initMessages() and loadWallet() methods which the wallet uses to send
 //!   notifications to the GUI should go away when GUI and wallet can directly
 //!   communicate with each other without going through the node
@@ -127,11 +123,6 @@ class Chain
 
         //! Check if transaction will be final given chain height current time.
         virtual bool checkFinalTx(const CTransaction& tx) = 0;
-
-        //! Add transaction to memory pool if the transaction fee is below the
-        //! amount specified by absurd_fee. Returns false if the transaction
-        //! could not be added due to the fee or for another reason.
-        virtual bool submitToMemoryPool(const CTransactionRef& tx, CAmount absurd_fee, CValidationState& state) = 0;
     };
 
     //! Return Lock interface. Chain is locked when this is called, and
@@ -164,9 +155,6 @@ class Chain
     //! Check if transaction has descendants in mempool.
     virtual bool hasDescendantsInMempool(const uint256& txid) = 0;
 
-    //! Relay transaction.
-    virtual void relayTransaction(const uint256& txid) = 0;
-
     //! Transaction is added to memory pool, if the transaction fee is below the
     //! amount specified by max_tx_fee, and broadcast to all peers if relay is set to true.
     //! Return false if the transaction could not be added due to the fee or for another reason.