Updating crufty tests, remove invalid TryCatch8NegativeTest

tests/language/src/TryCatch4NegativeTest.dart

Index: tests/language/src/TryCatch4NegativeTest.dart
diff --git a/tests/language/src/TryCatch4NegativeTest.dart b/tests/language/src/TryCatch4NegativeTest.dart
index 0302484766685adc3c3c7c105d0bdecae88b7c2a..2c0b9d9c99098edd7229064e3211eb1381433c25 100644
--- a/tests/language/src/TryCatch4NegativeTest.dart
+++ b/tests/language/src/TryCatch4NegativeTest.dart
@@ -10,7 +10,7 @@ interface TestException {
 }
 
 class MyException implements TestException {
-  const MyException(String message = "") : message_ = message;
+  const MyException([String message = ""]) : message_ = message;
   String getMessage() { return message_; }
   final String message_;
 }
@@ -44,12 +44,6 @@ class Helper {
   }
 }
 
-class TryCatch4NegativeTest {
-  static testMain() {
-    Expect.equals(1, Helper.f1(1));
-  }
-}
-
 main() {
-  TryCatch4NegativeTest.testMain();
+  Expect.equals(1, Helper.f1(1));
 }