Without a TomTom account to report map errors it would be hard to do so.
Plus there is no way to remove and items from the maps manually.

Spoiler: He you can read how to report map errors
[Only registered and activated users can see links. ]


But the bottom line here is it really that import about a gas station that is not there any more.
There are lots of items missing on maps or errors and if users do not take the time to report them nothing changes.

But you will need an account with TomTom to do the reporting.