NEW YORK — More than 3 in 4 New Yorkers said they were concerned about becoming a victim of violent crime in a citywide survey released Tuesday, a sky-high figure showing the five boroughs on edge five months into Mayor Eric Adams’ administration. In the Spectrum News/Siena College poll, conducted by phone during the last two weeks of May, 70% of New York City residents said they felt less safe than they did before the 26-month-old pandemic, and 25% described little change in their sense of security. Adams, a former police captain who has made crime-fighting the central focus of his mayoralty,…