If it doesn't exist then it's been destroyed. But that would be impossible of course!
It's existence presents uncomfortable feelings for Americans who oppose Trump too. It calls for admitting the fact that America's hands are tied because a president was compromised in a honey trap or similar type trap, and that then means the country is compromised too.
This is the reason why even you are content to say that it might not exist.
And also fwiw, the British are being completely cooperative, as would be expected.
It's not going away my friend. But is might be revealed some day after Trump is dead and he doesn't offer any opportunity to Russia/Putin.
Otherwise, it will live on indefinitely in the heads of all Americans who actually care.
I despise Trump and I think it's probably a rumor.