Sterling edges up as EU considers Brexit request; stocks flat

NEW YORK (Reuters) - World stock indexes were flat to lower on Wednesday with a disappointing forecast from Texas Instruments dragging down chipmaker shares, while the British pound inched up as European Union leaders consider London's request for a Brexit delay.An index of semiconductor shares was down more than 2%. Apple shares rose after Morgan Stanley said the iPhone maker's soon-to-be-launched video streaming service could boost its services revenue.Sterling inched higher, with European..