Citigroup is cutting nearly 300 workers in New York as it continues its massive layoff spree in an effort to reign in expenses, according to filings with the State Labor Department.   About 239 workers in the primary banking subsidiary, 44 from its broker-dealer unit and three from its technology arm are getting cut, according to Worker Adjustment and Retraining Notification (WARN) notices filed this week.  In early January, the company announced that it was cutting 20,000 roles "over the medium-term," as p ...