Nissan has lowered its vehicle delivery forecast for this year, citing weak demand and intensifying competition in China, where buyers are turning to domestically produced electric vehicles at a faster pace than initially estimated. The Japanese automaker now expects to deliver a maximum of 3 million vehicles this year, down from its previous forecast of 3.15 million. It also reported operating profit of 2.12 billion yen (13.3 million euros). [T…