Remove state checker code (#6978)

This isnw't used on Android anymore and I'm not planning to use it for
iOs.  I think we can ditch it.

Author: bendk

components/fxa-client/src/fxa_client.udl

@@ -1105,50 +1105,6 @@ interface IncomingDeviceCommand {
   TabsClosed(Device? sender, CloseTabsPayload payload);
 };
 
-/// Machinery for dry-run testing of FxaAuthStateMachine
-///
-/// Remove this once we've migrated the firefox-android and firefox-ios code to using FxaAuthStateMachine
-/// https:///bugzilla.mozilla.org/show_bug.cgi?id=1867793
-
-interface FxaStateMachineChecker {
-  constructor();
-
-  void handle_public_event(FxaEvent event);
-  void handle_internal_event(FxaStateCheckerEvent event);
-  void check_public_state(FxaState state);
-  void check_internal_state(FxaStateCheckerState state);
-};
-
-[Enum]
-interface FxaStateCheckerEvent {
-  GetAuthStateSuccess(FxaRustAuthState auth_state);
-  BeginOAuthFlowSuccess(string oauth_url);
-  BeginPairingFlowSuccess(string oauth_url);
-  CompleteOAuthFlowSuccess();
-  InitializeDeviceSuccess();
-  EnsureDeviceCapabilitiesSuccess();
-  CheckAuthorizationStatusSuccess(boolean active);
-  DisconnectSuccess();
-  GetProfileSuccess();
-  CallError();
-  EnsureCapabilitiesAuthError();
-};
-
-[Enum]
-interface FxaStateCheckerState {
-  GetAuthState();
-  BeginOAuthFlow(sequence<string> scopes, string entrypoint);
-  BeginPairingFlow(string pairing_url, sequence<string> scopes, string entrypoint);
-  CompleteOAuthFlow(string code, string state);
-  InitializeDevice();
-  EnsureDeviceCapabilities();
-  CheckAuthorizationStatus();
-  Disconnect();
-  GetProfile();
-  Complete(FxaState new_state);
-  Cancel();
-};
-
 dictionary UserData {
   string session_token;
   string uid;

components/fxa-client/src/lib.rs

@@ -69,12 +69,6 @@ pub use push::{
 };
 pub use token::{AccessTokenInfo, AuthorizationParameters, ScopedKey};
 
-// Used for auth state checking.  Remove this once firefox-android and firefox-ios are migrated to
-// using FxaAuthStateMachine
-pub use state_machine::checker::{
-    FxaStateCheckerEvent, FxaStateCheckerState, FxaStateMachineChecker,
-};
-
 /// Result returned by internal functions
 pub type Result<T> = std::result::Result<T, Error>;
 /// Result returned by public-facing API functions

components/fxa-client/src/state_machine/checker.rs

@@ -10,7 +10,6 @@ use error_support::breadcrumb;
 
 use crate::{internal::FirefoxAccount, DeviceConfig, Error, FxaEvent, FxaState, Result};
 
-pub mod checker;
 mod display;
 mod internal_machines;