AFC South free-agency update

[Editor’s note: This free-agency update comes from a variety of online resources. It includes re-signings, new signings, losses, and remaining free agents. If we’ve missed any, let us know.] Houston Texans Signed:  None. Lost:  DT Earl Mitchell (Dolphins); LB Darryl Sharpton (Redskins); DE Antonio Smith (Raiders); RB Ben Tate (Browns); DT Terrell McClain (Cowboys); LB…