Paytm Payments Bank Ltd.'s board member Manju Agarwal has resigned, according to people with knowledge of the matter.Agarwal, who served on the board as an independent director, resigned with effect from Feb. 1 this year.Since the Reserve Bank of India imposed stringent restrictions on Paytm Payments Bank, Agarwal didn't see any real future for the bank, the people quoted above said on condition of anonymity.Paytm Payments Bank's boa...