This is the solution found here
Add this to viewDidLoad()
if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)])
[self.tableView setSeparatorInset:UIEdgeInsetsZero];
if ([self.tableView respondsToSelector:@selector(setSeparatorStyle:)])
[self.tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone];