OPEC almost off radar of risks for oil market

* No change to 30 million bpd output target expected * U.S. oil boom leaves OPEC sidelined from demand growth * Saudi adjusts supply quietly to keep market balanced * Trouble ahead in 2014, cuts may be needed-delegate By Alex Lawler and Peg Mackey LONDON, May 27 (Reuters) - Oil traders should not lose toomuch sleep worrying about what OPEC, often unpredictable andquarrelsome in the past, will do