By Lucia Mutikani WASHINGTON (Reuters) – U.S. unit labor costs were much weaker than initially thought in the third-quarter amid robust worker productivity, providing a boost to the Federal Reserve’s fight against inflation. The inflation outlook was further brightened by other data on Wednesday showing a moderation in wage growth in November. The reports followed news on Tuesday that job openings dropped to more than a 2-1/2-year low in October. They strengthened financial market expectations that the U.S. central bank was done tightening monetary policy and could pivot to cutting rates as ea…