The shock resignation of U.S. House Speaker John Boehner on Friday reduces the chances of a government shutdown next week, potentially removing one source of investor anxiety as Wall Street gears up for a week heavy with economic data and commentary by Federal Reserve policymakers. Boehner said Friday he will step down from the speakership and leave the House at the end of October. This was seen as a sign that Boehner would advance a bill to fund the government without any complicating factors that would result in a White House veto.