My company is fully transitioning away from Box Sync and over to Box Drive. You can disable Box Sync from being used, but you can't perform a bulk edit on each person's account to uncheck Box Sync. Unless this is done, 'Synced' will still appear on the left hand side of a user's account. This will be a very time consuming administrative change when you have to manually uncheck this setting for hundreds, if not thousands of users.