Fix analysis_server test to not expect redundant error.

pkg/analysis_server/test/analysis/notification_analysis_options_test.dart

Index: pkg/analysis_server/test/analysis/notification_analysis_options_test.dart
diff --git a/pkg/analysis_server/test/analysis/notification_analysis_options_test.dart b/pkg/analysis_server/test/analysis/notification_analysis_options_test.dart
index a24b8117ce670116c6c35cbcc653bb59022d636c..265ee9b1bd17a765897c49c185ba6a9aa46bf593 100644
--- a/pkg/analysis_server/test/analysis/notification_analysis_options_test.dart
+++ b/pkg/analysis_server/test/analysis/notification_analysis_options_test.dart
@@ -296,12 +296,11 @@ linter:
     expect(testContext.analysisOptions.strongMode, enabled);
 
     if (enabled) {
-      // Should produce a warning and an error.
+      // Should produce a type warning.
       expect(
           errors.map((error) => error.type),
           unorderedEquals([
-            AnalysisErrorType.STATIC_TYPE_WARNING,
-            AnalysisErrorType.COMPILE_TIME_ERROR
+            AnalysisErrorType.STATIC_TYPE_WARNING
           ]));
     } else {
       // Should only produce a hint.