This actually was a deleted scene. It was in the novel and the shooting script.* It really was just Luke and Vader walking across the hanger. As they got to the end of the hangar, they passed a handful of Imperial Dignitaries who watched them suspiciously. The scene continued with Vader and Luke getting off of the elevator in the Emperor's throne room.

Not a big loss.

*At least in my re-creation of the shooting script. Because the novel matched so many scenes on storyboards and call sheets, I concluded that both the novel and the call sheets are based on the (currently lost) shooting script. I based my reconstructed shooting script on the novel. Photos from the set seem to back up the material in the novel that is now missing from the film. I could go on about this for hours....