[cleanup] Remove compat deprecation hint
[cleanup] Remove compat deprecation hint

This deprectation warning was introduced 2006 to replace old -link option
see https://mediawiki.org/wiki/Special:Code/pywikipedia/3072

Change-Id: I1df8b2f3512fa63b5b25f8e9e1e6d78e2ec4234e

wikimedia/pywikibot-core,wikimedia/pywikibot-core