[GUI] Don't show UTXO locking options for shield notes

Note locking is not yet implemented, as such there is no reason to show
any of the locking related actions in the coin control dialog.

Github-Pull: #2662
Rebased-From: f05bd1b

src/qt/coincontroldialog.cpp

@@ -828,6 +828,12 @@ void CoinControlDialog::updateView()
     // sort view
     sortView(sortColumn, sortOrder);
     ui->treeWidget->setEnabled(true);
+
+    // TODO: Remove this once note locking is functional
+    // Hide or show locking button and context menu items
+    lockAction->setVisible(fSelectTransparent);
+    unlockAction->setVisible(fSelectTransparent);
+    ui->pushButtonToggleLock->setVisible(fSelectTransparent);
 }
 
 void CoinControlDialog::refreshDialog()