Way too long, too bumpy, too many tight corners, too taxing on engines and brakes. If they still wanted to run an F1 race here, they'd have to make massive changes to the layout too as there's not enough runoff in some sections of the track, as well as some other safety concerns. Not many spectator facilities, either.
There's a part of the track called Bugatti circuit, it hosts motorbike races and I believe it has FIA Grade 1 meaning it could host an F1 race.