netstack: move TCP state to tcp package and cleanup probe
TCP probe support is implemented, unnecessarily, across the stack and and tcp
packages. It can live entirely in tcp. Additionally, it is only ever set at
initialization time, so support for dynamically adding/removing the probe isn't
necesary.
The probe is getting in the way of adding debugging for b/339664055.
netstack: move TCP state to tcp package and cleanup probe
TCP probe support is implemented, unnecessarily, across the stack and and tcp packages. It can live entirely in tcp. Additionally, it is only ever set at initialization time, so support for dynamically adding/removing the probe isn't necesary.
The probe is getting in the way of adding debugging for b/339664055.