Update sdui_preview.dart

Author: animator

lib/screens/common_widgets/agentic_ui_features/ai_ui_designer/sdui_preview.dart

@@ -3,8 +3,6 @@ import 'package:apidash/services/agentic_services/agent_caller.dart';
 import 'package:apidash/services/agentic_services/agents/stac_to_flutter.dart';
 import 'package:apidash_core/apidash_core.dart';
 import 'package:apidash_design_system/apidash_design_system.dart';
-import 'package:apidash_design_system/tokens/measurements.dart';
-import 'package:apidash_design_system/widgets/textfield_outlined.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';