Former New York City Mayor Rudy Giuliani has been dropped by his accountant and cannot find another to take up the management of his beleaguered finances, court records show. Giuliani’s lawyers filed Tuesday a response in his New York City federal bankruptcy case that details financial woes that include his unpopularity among accountants and his sole sources of income: social security, a radio show and a podcast. “Unfortunately, [Giuliani] originally had an accountant who was helping, however, he had a change of heart and indicated that he no longer wished to help prepare the monthly operating…