ndefMessagesWritten signal basically duplicates the requestCompleted
signal, but does not provide a request id parameter to track, which
messages were actually written. Given that, the signal is removed. One
should now use requestCompleted and check the request id instead.
[ChangeLog][QtNFC][QNearFieldTarget] Remove ndefMessagesWritten signal.
Use requestCompleted signal instead.
Task-number: QTBUG-93854
Change-Id: Ic7f97eabfa83879b0da0cf34310a2982621cf8de
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>