Revert "[tests] add check in pagegenerators_tests.TestWantedFactoryGenerator"
Revert "[tests] add check in pagegenerators_tests.TestWantedFactoryGenerator"

This reverts commit 5db84a897683232d250b9beca7eb6cad575caa15.

The results of this querypage are rarely updated, there is no guarantee 
that the page does not exist.

Bug: T205233
Change-Id: I6e71023f384ac4f1b1920ce38eb8b0c879c7651a

wikimedia/pywikibot-core,wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core