Remove directives validation.

pkg/analyzer/test/src/task/dart_test.dart

Index: pkg/analyzer/test/src/task/dart_test.dart
diff --git a/pkg/analyzer/test/src/task/dart_test.dart b/pkg/analyzer/test/src/task/dart_test.dart
index e217afc10630e5a9ae44c3c7ca9c728054ae1719..a12916d9d9926292ea03fb662f4d885d8b4c7f09 100644
--- a/pkg/analyzer/test/src/task/dart_test.dart
+++ b/pkg/analyzer/test/src/task/dart_test.dart
@@ -1438,22 +1438,6 @@ class ScanDartTaskTest extends _AbstractDartTaskTest {
 
 @reflectiveTest
 class VerifyUnitTaskTest extends _AbstractDartTaskTest {
-  test_perform_directiveError() {
-    // TODO(scheglov) uncomment when GetContentTask handles not
-    // existing sources correctly.
-//    Source source = _newSource('/test.dart', '''
-//library lib;
-//part '/does/not/exist.dart';
-//''');
-//    LibraryUnitTarget target = new LibraryUnitTarget(source, source);
-//    _computeResult(target, VERIFY_ERRORS);
-//    expect(task, new isInstanceOf<VerifyUnitTask>());
-//    // validate
-//    _fillErrorListener(VERIFY_ERRORS);
-//    errorListener.assertErrorsWithCodes(
-//        <ErrorCode>[StaticTypeWarningCode.NON_BOOL_CONDITION]);
-  }
-
   test_perform_verifyError() {
     Source source = _newSource('/test.dart', '''
 main() {