How is anyone going to know about this?

Ebay has removed the listing so it does not even show in your completed listings.  There is no feedback left to say that there ever was a listing on your account.

The only people who MIGHT remember your non-listing are those who asked questions and they would have been advised by ebay that it was a scam listing which had been removed.

Unless you are planning on selling a motorhome I would suggest that those potential buyers will never look at your account again.

To be blunt....you are worrying about nothing IMO.