reduce rethrow keyword relevance

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

Index: pkg/analysis_server/test/services/completion/keyword_contributor_test.dart
diff --git a/pkg/analysis_server/test/services/completion/keyword_contributor_test.dart b/pkg/analysis_server/test/services/completion/keyword_contributor_test.dart
index 95691418e39609e384cb6843dfd4a3b5bd2937dd..a5219ff225672bba1ef384dd1dab9d8f10863da0 100644
--- a/pkg/analysis_server/test/services/completion/keyword_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/keyword_contributor_test.dart
@@ -217,7 +217,11 @@ class KeywordContributorTest extends AbstractCompletionTest {
           expect(s.relevance, equals(importRelevance), reason: s.completion);
           expect(s.selectionOffset, equals(Keyword.IMPORT.syntax.length + 2));
         } else {
-          expect(s.relevance, equals(relevance), reason: s.completion);
+          if (s.completion == Keyword.RETHROW.syntax) {
+            expect(s.relevance, equals(relevance - 1), reason: s.completion);
+          } else {
+            expect(s.relevance, equals(relevance), reason: s.completion);
+          }
           expect(s.selectionOffset, equals(s.completion.length));
         }
         expect(s.selectionLength, equals(0));