remove dead code

lib/controllers/client_controller.dart

@@ -1,33 +0,0 @@
-import "dart:io";
-
-import "package:matrix/matrix.dart";
-import "package:nexusbot/controllers/settings_controller.dart";
-import "package:riverpod/riverpod.dart";
-import "package:sqflite_common_ffi/sqflite_ffi.dart";
-
-class ClientController extends AsyncNotifier<Client> {
-  @override
-  Future<Client> build() async {
-    final settings = ref.watch(SettingsController.provider)!;
-    final client = Client(
-      "nexusbot",
-      database: await MatrixSdkDatabase.init(
-        "NexusBot",
-        database: await databaseFactoryFfi.openDatabase(inMemoryDatabasePath),
-      ),
-    );
-
-    await client.checkHomeserver(settings.homeserver);
-    await client.login(
-      LoginType.mLoginPassword,
-      identifier: AuthenticationUserIdentifier(user: settings.name),
-      password: (await File(settings.botPasswordFile).readAsString()).trim(),
-    );
-
-    return client;
-  }
-
-  static final provider = AsyncNotifierProvider<ClientController, Client>(
-    ClientController.new,
-  );
-}

lib/controllers/last_synced_controller.dart

@@ -1,12 +0,0 @@
-import "package:riverpod/riverpod.dart";
-
-class LastSyncedController extends Notifier<String?> {
-  @override
-  String? build() => null;
-
-  void set(String value) => state = value;
-
-  static final provider = NotifierProvider<LastSyncedController, String?>(
-    LastSyncedController.new,
-  );
-}