NEW YORK/SAN FRANCISCO (Reuters) – Goldman Sachs Group Inc technology investment banker Anthony Noto, who helped orchestrate Twitter Inc’s successful IPO in November, is leaving to join private equity firm Coatue Management, according to a Goldman memo and a source familiar with the matter. It is unclear what role Noto, who won plaudits from Wall Street and Silicon Valley for leading the messaging service’s low-profile but smooth coming-out party, will play at Coatue. The source confirmed that Noto is joining the private equity firm on condition of anonymity. …