httplib2 is not used anymore, remove paragraph from docs/licenses.rst
httplib2 is not used anymore, remove paragraph from docs/licenses.rst

Change-Id: I658b6b98c89673498a0598f1a7f69475481f6ce4

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