By Michael S. Derby NEW YORK (Reuters) -Federal Reserve Bank of Philadelphia leader Patrick Harker said Thursday that while the central bank needs to raise rates more to cool off inflation, it can probably do so at a much slower pace compared to the action of last year. “I expect that we will raise rates a few more times this year, though, to my mind, the days of us raising them 75 basis points at a time have surely passed,” Harker said in a speech to a local group in Malvern, Pa. “In my view, hikes of 25 basis points will be appropriate going forward.” Once the Fed gets to a stopping place fo…