remove duplicate completion suggestions

pkg/analysis_server/test/services/completion/local_computer_test.dart

Index: pkg/analysis_server/test/services/completion/local_computer_test.dart
diff --git a/pkg/analysis_server/test/services/completion/local_computer_test.dart b/pkg/analysis_server/test/services/completion/local_computer_test.dart
index d6f49b34d8f7e168fa1d4af7a914c3a25bc9b353..47399376743c25f4f87803cdcb05259c7b5df3a3 100644
--- a/pkg/analysis_server/test/services/completion/local_computer_test.dart
+++ b/pkg/analysis_server/test/services/completion/local_computer_test.dart
@@ -733,4 +733,10 @@ class B extends A {
     expect(suggestion.requiredParameterCount, 2);
     expect(suggestion.hasNamedParameters, false);
   }
+
+  test_shadowed_name() {
+    addTestSource('var a; class A { var a; m() { ^ } }');
+    expect(computeFast(), isTrue);
+    assertSuggestLocalField('a', null);
+  }
 }