Park Photon CustomAuth injector

- Photon dashboard has CustomAuth disabled on the AppId now, so the
  watch never needs to attach userid/LoginLock to its Authenticate
  ops. Removed the harmony hook on NetworkingPeer.CallAuthenticate,
  the AuthValuesInjector_Prefix method, the GetCurrentLockToken
  helper, and the InjectAuthValues Cfg field + config load. Bumped
  the [config] log line to drop the InjectAuthValues field.
- Both dorknet-clientmod.json.template copies (source +
  local-releases) lose the "InjectAuthValues" key.
- Code moved verbatim to DorkNet.ClientMod/attic/AuthValuesInjector.cs.attic
  with a header explaining why it was parked and how to restore it.
  The .cs.attic suffix keeps the SDK's auto-globber from compiling it.

DorkNet.ClientMod/dorknet-clientmod.json.template

@@ -4,6 +4,5 @@
   "PhotonAppId": "{PHOTON_APPID}",
   "PhotonVoiceAppId": "{PHOTON_VOICE_APPID}",
   "PhotonCloudRegion": "{PHOTON_REGION}",
-  "InjectAuthValues": false,
   "EnableTlsTrustBypass": true
 }