I have asked Google (repeatedly) to remove roads on my private property from their Maps. Those roads still appear there, so I find it hard to believe they will honor these types requests either.
Instead you have to submit an edit and state in there that it's a private road and on private property so should not be used for navigation purposes. It will then be removed from navigation etc.
Several attempts at reporting this to Gmaps has gone ignored.
Google sucks so much at these countless edge cases that it drains all the benefit of anything they're actually good at.
Don't get me started.
"Not visible from an aerial shot with leaves on" doesn't really mean anything. If the roads aren't buried underground or in a tropical rainforest, they are probably visible to a satellite at the right time or wavelength.