Moved the AST related tests to their new locations

pkg/analyzer/test/dart/test_all.dart

Index: pkg/analyzer/test/dart/test_all.dart
diff --git a/pkg/analyzer/test/dart/test_all.dart b/pkg/analyzer/test/dart/test_all.dart
index 669b706c2b4cba1a4447abe25d7c39cee412d33c..df7ff550d71d877ed0326fc30ca2df1e8f77cbf1 100644
--- a/pkg/analyzer/test/dart/test_all.dart
+++ b/pkg/analyzer/test/dart/test_all.dart
@@ -7,12 +7,14 @@ library analyzer.test.generated.test_all;
 import 'package:unittest/unittest.dart';
 
 import '../utils.dart';
+import 'ast/test_all.dart' as ast;
 import 'element/test_all.dart' as element;
 
 /// Utility for manually running all tests.
 main() {
   initializeTestEnvironment();
   group('dart tests', () {
+    ast.main();
     element.main();
   });
 }