PHILIP PULLELLA SIX months ago Pope Francis brushed off speculation he was about to resign due to health problems. Still, even if he had toyed with the idea, he faced one major obstacle: there was already another ex-pope in retirement. The death on Saturday of Benedict, who in 2013 became the first pontiff in 600 years to step down instead of reigning for life, should make any decision to step down easier on Francis and the Church, which has struggled enough with having "two popes", let alone three - two retired and one reigning. It could also prompt the current pontiff to review…