Remove unused and uninitialized non-nullable field from a test (#1329)

diff --git a/LanguageFeatures/Super-parameters/grammar_A02_t01.dart b/LanguageFeatures/Super-parameters/grammar_A02_t01.dart
index 77075f7..e3a2e66 100644
--- a/LanguageFeatures/Super-parameters/grammar_A02_t01.dart
+++ b/LanguageFeatures/Super-parameters/grammar_A02_t01.dart
@@ -29,7 +29,6 @@
 }
 
 class C extends S {
-  int i;
   C(super.s1) : super(super.s1);
 //                    ^^^^^^^^
 // [analyzer] unspecified