Fix non-existing received file still appearing in live folder issue

After receiving a file by OPP from Bluetooth remote device, user can delete
this file from Gallery or 3rd party application. In Opp live folder, user
could still open this file, but with dialog "file not exist" displayed, and
there is no way to make this file disappear from liver folder.
Current solution is to delete the BT OPP DB record after openning an invalid
uri associated with the file in folder, as an easy method without syncing.