wallet: Remove sendfree

This removes the option from the wallet to not pay a fee on "small"
transactions which spend "old" inputs.

This code is no longer worth keeping around, as almost all miners
prefer not to include transactions which pay no fee at all.

1 files changed, 0 insertions, 20 deletions

diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index d4fd8bd37..1d19c6575 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -444,11 +444,7 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
     CAmount nChange             = 0;
     unsigned int nBytes         = 0;
     unsigned int nBytesInputs   = 0;
-    double dPriority            = 0;
-    double dPriorityInputs      = 0;
     unsigned int nQuantity      = 0;
-    int nQuantityUncompressed   = 0;
-    bool fAllowFree             = false;
     bool fWitness               = false;
 
     std::vector<COutPoint> vCoinControl;
@@ -473,9 +469,6 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
         // Amount
         nAmount += out.tx->tx->vout[out.i].nValue;
 
-        // Priority
-        dPriorityInputs += (double)out.tx->tx->vout[out.i].nValue * (out.nDepth+1);
-
         // Bytes
         CTxDestination address;
         int witnessversion = 0;
@@ -492,8 +485,6 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
             if (keyid && model->getPubKey(*keyid, pubkey))
             {
                 nBytesInputs += (pubkey.IsCompressed() ? 148 : 180);
-                if (!pubkey.IsCompressed())
-                    nQuantityUncompressed++;
             }
             else
                 nBytesInputs += 148; // in all error cases, simply assume 148 here
@@ -525,17 +516,6 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
         if (nPayFee > 0 && coinControl->nMinimumTotalFee > nPayFee)
             nPayFee = coinControl->nMinimumTotalFee;
 
-
-        // Allow free? (require at least hard-coded threshold and default to that if no estimate)
-        double mempoolEstimatePriority = mempool.estimateSmartPriority(nTxConfirmTarget);
-        dPriority = dPriorityInputs / (nBytes - nBytesInputs + (nQuantityUncompressed * 29)); // 29 = 180 - 151 (uncompressed public keys are over the limit. max 151 bytes of the input are ignored for priority)
-        double dPriorityNeeded = std::max(mempoolEstimatePriority, AllowFreeThreshold());
-        fAllowFree = (dPriority >= dPriorityNeeded);
-
-        if (fSendFreeTransactions)
-            if (fAllowFree && nBytes <= MAX_FREE_TRANSACTION_CREATE_SIZE)
-                nPayFee = 0;
-
         if (nPayAmount > 0)
         {
             nChange = nAmount - nPayAmount;