This operation should be a no-op anyway, since at this point in time,
the fromAscii and toAscii functions simply call their fromLatin1 and
toLatin1 counterparts.
Task-number: QTBUG-21872
Change-Id: Ie8ac500f2f8ebe99b7525feaa7b39247e641a461
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>