Remove unused or unneeded stuff from java_core.dart.

pkg/analyzer/test/generated/constant_test.dart

Index: pkg/analyzer/test/generated/constant_test.dart
diff --git a/pkg/analyzer/test/generated/constant_test.dart b/pkg/analyzer/test/generated/constant_test.dart
index e5dffdf076f587309ea3b64201bfb279600c1fe3..2e3aacbfd6fc25fb83b1c20b40e0f17664d1307f 100644
--- a/pkg/analyzer/test/generated/constant_test.dart
+++ b/pkg/analyzer/test/generated/constant_test.dart
@@ -11,7 +11,6 @@ import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
-import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -30,6 +29,8 @@ import 'engine_test.dart';
 import 'resolver_test.dart';
 import 'test_support.dart';
 
+const int LONG_MAX_VALUE = 0x7fffffffffffffff;
+
 main() {
   initializeTestEnvironment();
   runReflectiveTests(ConstantEvaluatorTest);
@@ -4213,7 +4214,7 @@ class DartObjectImplTest extends EngineTestCase {
    *
    * @param expected the expected result of the operation
    * @param leftOperand the left operand to the operation
-   * @param rightOperand the left operand to the operation
+   * @param rightOperand the right operand to the operation
    * @throws EvaluationException if the result is an exception when it should not be
    */
   void _assertShiftRight(DartObjectImpl expected, DartObjectImpl leftOperand,