Not saving ComboAddress d_local in class TeeAction this time

Not saving ComboAddress d_local in class TeeAction this time

Accoding to https://github.com/PowerDNS/pdns/pull/11889
> rgacogne
> Since we only use the local address in the constructor, I don't think we need to keep it around?
>
> FredericDT
> Possibly using that d_local in statistical function?
>
> rgacogne
> I would prefer not keeping it for now, we can always add it back later when we actually decide to do something with it :)

Signed-off-by: FredericDT <frederic.dt.twh@gmail.com>