By Dan Burns (Reuters) -The Federal Reserve needs to be "very cautious" in removing restrictive monetary policy with inflation still above the central bank's 2% target and remaining persistent, Cleveland Fed President Beth Hammack said on Monday. "I think we are only a short distance to neutral, and it worries me that if we remove that restriction from the economy, things can start overheating again," Hammack said in remarks that showed the divisions inside the Fed over whether interest rates will keep f ...