The Board of Examiners for Nursing on Wednesday disciplined five nurses while dropping the charges against an Ansonia nurse because he is now serving 60 years in prison for an unrelated felony murder. The charges were dropped against Jermaine V. Richards, a former licensed practical nurse from Ansonia, because he was convicted in March of the felony murder of his ex-girlfriend, an Eastern Connecticut State University student, in 2013. Since Richards’ nursing license lapsed in 2016 and is now serving a long sentence for murdering Alyssiah Wiley, 20, of West Haven, the prosecution of administrative charges against him is unnecessary, an attorney for the state Department of Public Health told the board. In charges unrelated to the murder, Richards had been accused of being involved in a fight with a visitor in the home of one of his patients. In June 2017, the board revoked his nursing license because of the fight and after concluding that he slept while on duty at a patient’s home, but a month later, the board vacated the revocation because Richards had asked for a continuance.