Remove no-longer used UI hints in bitcoin core

The Qt UI has its own associated structures for temporary transaction state / cache.

src/qt/transactionrecord.cpp

@@ -33,7 +33,7 @@ bool TransactionRecord::showTransaction(const CWalletTx &wtx)
 QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *wallet, const CWalletTx &wtx)
 {
     QList<TransactionRecord> parts;
-    int64 nTime = wtx.nTimeDisplayed = wtx.GetTxTime();
+    int64 nTime = wtx.GetTxTime();
     int64 nCredit = wtx.GetCredit(true);
     int64 nDebit = wtx.GetDebit();
     int64 nNet = nCredit - nDebit;