Former Lynn Mayor Edward J. “Chip” Clancy and his staff, as they prepared to depart City Hall for good, deleted all e-mails and purged electronic files from city computers, says the new mayor, who is fuming over what she says may be a violation of state law. “I feel this is a very serious breach of the public trust,” said Judith Flanagan Kennedy, Lynn’s new mayor. “I can’t think of a valid reason why e-mails were deleted from the mayor’s office.” Besides the e-mails, the city is missing key documents - payroll records, contracts and press releases - stored on...