Extended CategoryMoveRobot to remove categories.
Extended CategoryMoveRobot to remove categories.

In the next step the CategoryRemoveRobot will
be merged with the CategoryMoveRobot.

Change-Id: Ib26e7541fd13b06d92261ddbb2b912a854200ab1

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