Just two days after Samsung unveiled it's Honeycomb-sporting Galaxy Tab 7.7, the slate (along with all traces of its existence) has vanished from the IFA floor. All demo models have been yanked from Sammy's booth, branding has disappeared, and even the large poster touting the slate has been covered up. The Korean company hasn't been entirely forthcoming about the reason behind the removal, but a spokesperson did tell SlashGear that the move was volun