[TASK] Make LegacyLinkNotationConverterTest notice free

Resolves: #84418
Releases: master
Change-Id: I63db56d7ea5e5ac40aaa887182149df70ddf43d9
Reviewed-on: https://review.typo3.org/56289


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>