UPDATE 1-Morgan Stanley commodity revs down, asset sale on course

By Barani Krishnan April 18 (Reuters) - Morgan Stanley said on Thursday revenue from commodities trading fell sharply in the first quarter and it is working to dispose of nonessential commodity businesses. Revenue from trading commodities, currencies and bonds at the Wall Street bank fell more than 40 percent from a year earlier, a much greater decline than that experienced by Goldman Sachs Group Inc and JPMorgan Chase & Co , Morgan Stanley's main rivals in commodities. Wall Street