Remove site.randompages() continuation uniqueness test
Remove site.randompages() continuation uniqueness test

Uniqueness is not guaranteed by the API, and thus should not
be guaranteed on the site api level.

Bug: T84944
Change-Id: I5a9a8c6d056f0d23fa300a8ed462d8673218241d

h4ck3rm1k3/pywikibot-core,magul/pywikibot-core,hasteur/g13bot_tools_new,hasteur/g13bot_tools_new,Darkdadaah/pywikibot-core,TridevGuha/pywikibot-core,smalyshev/pywikibot-core,jayvdb/pywikibot-core,npdoty/pywikibot,xZise/pywikibot-core,wikimedia/pywikibot-core,valhallasw/pywikibot-core,Darkdadaah/pywikibot-core,trishnaguha/pywikibot-core,VcamX/pywikibot-core,h4ck3rm1k3/pywikibot-core,PersianWikipedia/pywikibot-core,magul/pywikibot-core,emijrp/pywikibot-core,npdoty/pywikibot,icyflame/batman,happy5214/pywikibot-core,jayvdb/pywikibot-core,happy5214/pywikibot-core,darthbhyrava/pywikibot-local,wikimedia/pywikibot-core,hasteur/g13bot_tools_new