/beacon/validators/all has been removed in sigp#1569

book/src/faq.md

@@ -55,14 +55,10 @@ voting period the validator might have to wait ~3.4 hours for next voting
 period. In times of very, very severe network issues, the network may even fail
 to vote in new Eth1 blocks, stopping all new validator deposits!
 
-> Note: you can see the list of validators included in the beacon chain using
-> our REST API: [/beacon/validators/all](./http/beacon.md#beaconvalidatorsall)
-
 #### 2. Waiting for a validator to be activated
 
 If a validator has provided an invalid public key or signature, they will
-_never_ be activated or even show up in
-[/beacon/validators/all](./http/beacon.html#beaconvalidatorsall).
+_never_ be activated.
 They will simply be forgotten by the beacon chain! But, if those parameters were
 correct, once the Eth1 delays have elapsed and the validator appears in the
 beacon chain, there's _another_ delay before the validator becomes "active"