Remove dead code from Page.isDisambig()
Remove dead code from Page.isDisambig()

Since a62b2475323efb5b694ae98444130b13d275de68 the method
has been using the Disambiguator extension, enabled on enwiki
since commit a8842532de8c403c755bfa42d90714addb690e38 of the
operations/mediawiki-config repository.

Change-Id: I0ceedd1728322dc4761bd74da1dca3a4088633f6

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