New Year’s Eve show had been cancelledBeloved Buffalo R&B singer Lance Diamond died Sunday, a few days after he canceled his New Year’s Eve performance at his favorite venue, Milkie’s on Elmwood Avenue, formerly the Elmwood Lounge, where he appeared regularly for many years.He had been hospitalized in Buffalo General Medical Center for heart complications, family members said.In a career that spanned more than four decades, Diamond and his 24 Karat Diamond Band appeared at every major local festival and public event. His dynamic personality, his deep croon and his dance rhythms guaranteed