A Wisconsin inmate who was sexually assaulted by a cellmate does not have a constitutional claim against prison officials, a federal appeals court has held.The 7th U.S. Circuit Court of Appeals on Monday declined to revive a lawsuit accusing administrators at Stanley Correctional Institution of violating Jairo E. Ramos’ Eighth Amendment right to be free of cruel and unusual punishment.The court conceded the cellmate — who it identified only as DaSilva — had been convicted of sexually assaulting a woman …