TF-1694 Remove fluttertoast library because not used

(cherry picked from commit 5836725f90dc215db71917b45ef164437d5c9aef)

lib/main/bindings/core/core_bindings.dart

@@ -5,7 +5,6 @@ import 'package:core/presentation/utils/app_toast.dart';
 import 'package:core/presentation/utils/responsive_utils.dart';
 import 'package:core/utils/config/app_config_loader.dart';
 import 'package:device_info_plus/device_info_plus.dart';
-import 'package:fluttertoast/fluttertoast.dart';
 import 'package:get/get.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tmail_ui_user/features/email/data/local/html_analyzer.dart';
@@ -43,7 +42,6 @@ class CoreBindings extends Bindings {
   }
 
   void _bindingToast() {
-    Get.put(FToast());
     Get.put(AppToast());
   }