Clean up many generated constructors

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

Index: pkg/analysis_server/test/services/correction/source_range_test.dart
diff --git a/pkg/analysis_server/test/services/correction/source_range_test.dart b/pkg/analysis_server/test/services/correction/source_range_test.dart
index 41bb6418c93340e7a3428280851de8afe12b56b7..4754b564727b9ad269e9c09d08ebbc90438ab8d5 100644
--- a/pkg/analysis_server/test/services/correction/source_range_test.dart
+++ b/pkg/analysis_server/test/services/correction/source_range_test.dart
@@ -46,7 +46,7 @@ class SourceRangesTest extends AbstractSingleUnitTest {
 
   void test_rangeError() {
     AnalysisError error =
-        new AnalysisError.con2(null, 10, 5, ParserErrorCode.CONST_CLASS, []);
+        new AnalysisError(null, 10, 5, ParserErrorCode.CONST_CLASS, []);
     expect(rangeError(error), new SourceRange(10, 5));
   }