Why meet your legal obligations if you have a chance of deleting the obligations instead? Absolute chancers.
Why stop there? Why not revoke the City’s charter altogether?
The City of London isn't legally reliant on a charter. It draws existence from 'Time Immemorial'.
Specifically it exists because it existed before 1189
This is a good and subtle point of law -- The City of London is a corporation "by prescription".
But while it was created by neither statue nor royal charter, I doubt the parliament could not end it if it so decided....
That's why the City has the Remembrancer https://en.wikipedia.org/wiki/City_Remembrancer taking care of the City's business in the Parliament.
The King-in-Parliament can abrogate common law.