Fixes #1288. Remove 'index' declaration
diff --git a/LanguageFeatures/Enhanced-Enum/semantics_A01_t05.dart b/LanguageFeatures/Enhanced-Enum/semantics_A01_t05.dart
index c9e35bc..b065c82 100644
--- a/LanguageFeatures/Enhanced-Enum/semantics_A01_t05.dart
+++ b/LanguageFeatures/Enhanced-Enum/semantics_A01_t05.dart
@@ -35,17 +35,6 @@
 // [cfe] unspecified
 }
 
-enum E2 {
-  e1(11),
-  e2(22),
-  e3(33);
-
-  final int index;
-  const E2(this.index);
-//         ^^^^^^^^^^
-// [analyzer] unspecified
-}
-
 main() {
   E1.e1;
 }