Well it wasn't that long ago that it was submitted, late last night. If you have this file in the chest, periodically check it (scan it in the chest), there should still be a copy in the chest even though you restored it to the original location. When it is no longer detected then you can also remove it from the File System Shield and avast Settings, exclusions lists.
Have you got the latest virus definitions and nave you scanned the file again as that really is the easiest way to tell of its progress, other than avast are usually quite quick to correct any FP once identified.