Post free upgrade deadline, how to remove "Get Windows 10" icon AND preloaded files?

If you chose not to get the Windows spyware Windows 10 on 29 July, but did not click cancel the offer and let it lapse, then what now?

Windows 10 support says you can cancel the free offer but if you do not do this in time this option is now removed from their Get W10 App.

I realise there are answers on how to disable the icon, but I want to purge all the Windows 10 marketing AND preloads to free up my old small SSD that is creaking under the weight.

How do I make it as if this W10 never happened to W7?

EDIT: In July Superusers says don't worry there will be an update. How does this square with Windows change in roll back policy?:

But there’s yet another problem with rollbacks. Richard Hay reported
yesterday on Windows Supersite that Microsoft has just --
unilaterally, and without notification to anyone -- changed the rules,
so rollbacks can only be performed for 10 days after the initial
installation. “Microsoft can now recover anywhere between 3 and 5GB of
storage space on the users device that would normally be occupied by
the previous operating system files that were saved for a possible
rollback recovery.” That’s a decent argument now, but somebody

should’ve told Microsoft last year when they silently pushed 3GB to
6GB of unwanted data onto Windows 7 and 8.1 computers as part of the
“Get Windows 10” effort. How convenient to have that change of heart.

Answer

Use Steve Gibson's Never10

If Microsoft's GWX (Get Windows 10) had already secretly and silently downloaded the Windows 10 files into a hidden directory (this can be squatting on more than 6.5 gigabytes of your hard drive space), Never10 will show the exact count and amount of files and allow its user to remove them with one click.