A call to `removeprunedfunds` does not update the transaction list in the GUI, and trying to access the info of a deleted transaction will result in a segfault.

```bash
(lldb) run
Process 4859 launched: '/Users/michael/github/bitcoin/src/qt/bitcoin-qt' (x86_64)
2019-09-24 15:41:53.763094+0800 bitcoin-qt[4859:390268] MessageTracer: Falling back to default whitelist
Process 4859 stopped
* thread #1, name = 'bitcoin-main', queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x34)
    frame #0: 0x00000001001c9bf6 bitcoin-qt`TransactionDesc::FormatTxStatus(wtx=0x00007ffeefbfc0e0, status=0x00007ffeefbfc0c0, inMempool=false, numBlocks=1) at transactiondesc.cpp:33:31
   30  	{
   31  	    if (!status.is_final)
   32  	    {
-> 33  	        if (wtx.tx->nLockTime < LOCKTIME_THRESHOLD)
   34  	            return tr("Open for %n more block(s)", "", wtx.tx->nLockTime - numBlocks);
   35  	        else
   36  	            return tr("Open until %1").arg(GUIUtil::dateTimeStr(wtx.tx->nLockTime));
Target 0: (bitcoin-qt) stopped.
```
if (!ParseMoney(gArgs.GetArg("-paytxfee", ""), nFeePerK)) {
            chain.initError(AmountErrMsg("paytxfee", gArgs.GetArg("-paytxfee", "")).translated);
            return nullptr;
        }
        if (nFeePerK > HIGH_TX_FEE_PER_KB) {
            chain.initWarning(AmountHighWarn("-paytxfee").translated + " " +
                              _("This is the transaction fee you will pay if you send a transaction.").translated);
        }
        walletInstance->m_pay_tx_fee = CFeeRate(nFeePerK, 1000);
        if (walletInstance->m_pay_tx_fee < chain.relayMinFee()) {
            chain.initError(strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)").translated,
                gArgs.GetArg("-paytxfee", ""), chain.relayMinFee().ToString()));
            return nullptr;
        }
    }
    if (gArgs.IsArgSet("-maxtxfee"))
    {
        CAmount nMaxFee = 0;
        if (!ParseMoney(gArgs.GetArg("-maxtxfee", ""), nMaxFee)) {
            chain.initError(AmountErrMsg("maxtxfee", gArgs.GetArg("-maxtxfee", "")).translated);
            return nullptr;
        }
        if (nMaxFee > HIGH_MAX_TX_FEE) {
            chain.initWarning(_("-maxtxfee is set very high! Fees this large could be paid on a single transaction.").translated);
        }
        if (CFeeRate(nMaxFee, 1000) < chain.relayMinFee()) {
            chain.initError(strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)").translated,
                                       gArgs.GetArg("-maxtxfee", ""), chain.relayMinFee().ToString()));
            return nullptr;
        }