FRANKFURT (Reuters) - Deutsche Bank's chairman Paul Achleitner said he intends to step down as chairman of the German lender when his term ends in 2022.His announcement, made to shareholders at the bank's annual general meeting on Wednesday, was the first time that he has publicly said that he would not seek a third five-year term.Achleitner has come under criticism from some Deutsche Bank shareholders for the bank's losses, strategy and management upheaval. "I won't seek re-election. After 10..