RICHMOND, Va. — Advocates for Virginia’s prisoners say a bill aimed at helping inmates who may have been given inflated sentences would have little impact.Lawmakers have been wrestling with what to do about a group of inmates who were possibly unfairly punished because their juries weren’t informed that Virginia had abolished parole in 1995. Because judges weren’t required to tell jurors about the end of parole until 2000, some uninformed juries gave criminals longer sentences, thinking they would …