datapath: remove stale doc TODO
datapath: remove stale doc TODO

The doc update happened with commit
d89d81e004ab ("doc: Add Egress Gateway Getting Started Guide").

Signed-off-by: Julian Wiedmann <a70165cc435925071a1d5d2715fcc7eb04666fa4@isovalent.com>
Signed-off-by: Gilberto Bertin <a93f35d43382e9739cc1b4df252abaa0d7c5c77f@cilium.io>

michi-covalent/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium