Revert "ipn,types/persist: store disallowed TKA's in prefs, lock local-disable"

This reverts commit f1130421f0.

It was submitted with failing tests (go generate checks)

Requires a lot of API changes to fix so rolling back instead of
forward.

Change-Id: I024e8885c0ed44675d3028a662f386dda811f2ad
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

types/persist/persist.go

@@ -7,7 +7,6 @@ package persist
 
 import (
 	"fmt"
-	"reflect"
 
 	"tailscale.com/tailcfg"
 	"tailscale.com/types/key"
@@ -40,12 +39,6 @@ type Persist struct {
 	UserProfile       tailcfg.UserProfile
 	NetworkLockKey    key.NLPrivate
 	NodeID            tailcfg.StableNodeID
-
-	// DisallowedTKAStateIDs stores the tka.State.StateID values which
-	// this node will not operate network lock on. This is used to
-	// prevent bootstrapping TKA onto a key authority which was forcibly
-	// disabled.
-	DisallowedTKAStateIDs []string
 }
 
 // PublicNodeKey returns the public key for the node key.
@@ -77,8 +70,7 @@ func (p *Persist) Equals(p2 *Persist) bool {
 		p.LoginName == p2.LoginName &&
 		p.UserProfile == p2.UserProfile &&
 		p.NetworkLockKey.Equal(p2.NetworkLockKey) &&
-		p.NodeID == p2.NodeID &&
-		reflect.DeepEqual(p.DisallowedTKAStateIDs, p2.DisallowedTKAStateIDs)
+		p.NodeID == p2.NodeID
 }
 
 func (p *Persist) Pretty() string {