FRANKFURT (Reuters) -Moody’s on Wednesday upgraded Deutsche Bank’s credit rating, a vote of confidence as the German lender concludes a major overhaul. The upgrade to A1 from A2 follows earlier upgrades by Moody’s and other competing ratings agencies as the bank has returned to profit after years of losses. Moody’s, which tweaked the outlook to “stable” from “positive”, said Germany’s largest lender had made progress in meeting medium-term targets, “in particular by being able to sustain improved, yet still relatively modest, profitability.” Deutsche Bank’s Chief Executive Christian Sewing sai…