doc: Remove outdated comment in TransactionTablePriv

Summary: This is a backport of [[bitcoin-core/gui#17 | core-gui#17]]

Test Plan: Proofreading

Reviewers: #bitcoin_abc, majcosta

Reviewed By: #bitcoin_abc, majcosta

Differential Revision: https://reviews.bitcoinabc.org/D9973

src/qt/transactiontablemodel.cpp

@@ -176,13 +176,9 @@ class TransactionTablePriv {
         if (idx >= 0 && idx < cachedWallet.size()) {
             TransactionRecord *rec = &cachedWallet[idx];
 
-            // Get required locks upfront. This avoids the GUI from getting
-            // stuck if the core is holding the locks for a longer time - for
-            // example, during a wallet rescan.
-            //
             // If a status update is needed (blocks came in since last check),
-            // update the status of this transaction from the wallet. Otherwise,
-            // simply re-use the cached status.
+            // try to update the status of this transaction from the wallet.
+            // Otherwise, simply re-use the cached status.
             interfaces::WalletTxStatus wtx;
             int numBlocks;
             int64_t block_time;