Introduction
QR codes cannot be deleted, but they can be edited at any time. To do so, see the article How do I edit a QR code
Put the QR codes in a "Trash" folder
If needed, you can create a "Trash" folder and move QR codes you no longer wish to use.
Conclusion
By adopting the 'Trash' approach for unused QR codes, it is possible to maintain the clarity of the collection while retaining the ability to edit them in the future if necessary.