fix(flutter): 移除搜索框识剧入口

test/widget_test.dart

@@ -215,7 +215,6 @@ void main() {
     expect(find.byKey(const Key('theater-category-chips')), findsOneWidget);
     expect(find.byKey(const Key('theater-language-chips')), findsNothing);
     expect(find.byKey(const Key('home-all-dramas-grid')), findsOneWidget);
-    expect(find.byKey(const Key('discover-identify')), findsOneWidget);
     expect(tester.takeException(), isNull);
   });