ipn: remove unused NLKeyStateKey constant
We stopped writing network lock keys as separate items with
the constant is no longer used.
// StateKey "user-1234".
ServerModeStartKey = StateKey("server-mode-start-key")
- // NLKeyStateKey is the key under which we store the node's
- // network-lock node key, in its key.NLPrivate.MarshalText representation.
- NLKeyStateKey = StateKey("_nl-node-key")
-
// KnownProfilesStateKey is the key under which we store the list of
// known profiles. The value is a JSON-encoded []LoginProfile.
KnownProfilesStateKey = StateKey("_profiles")
