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: Ib84e307f486cb3049f0b61a667caa40799394f86
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>