Issue 25827. Don't propose to remove the type of an incomplete variable declaration.

pkg/analysis_server/test/services/correction/assist_test.dart

Index: pkg/analysis_server/test/services/correction/assist_test.dart
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
index 42513f362aedebce1c78491c0eb4e96d6de95e7b..5c84d352885c1f3b5fab087751562723121bd129 100644
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ b/pkg/analysis_server/test/services/correction/assist_test.dart
@@ -3317,6 +3317,14 @@ main() {
 ''');
   }
 
+  test_removeTypeAnnotation_topLevelVariable_BAD_syntheticName() async {
+    verifyNoTestUnitErrors = false;
+    resolveTestUnit('''
+MyType
+''');
+    await assertNoAssistAt('MyType', DartAssistKind.REMOVE_TYPE_ANNOTATION);
+  }
+
   test_removeTypeAnnotation_topLevelVariable_OK() async {
     resolveTestUnit('''
 int V = 1;