Start pulling pub from its own repo.

tools/testing/dart/test_configurations.dart

Index: tools/testing/dart/test_configurations.dart
diff --git a/tools/testing/dart/test_configurations.dart b/tools/testing/dart/test_configurations.dart
index d56514eed29cc598cdbfcbc1bb22e28c5af06a88..c552282f0588148f8dda198abd32ad220ee0de0c 100644
--- a/tools/testing/dart/test_configurations.dart
+++ b/tools/testing/dart/test_configurations.dart
@@ -196,14 +196,6 @@ void testConfigurations(List<Map> configurations) {
           }
           testSuites.add(
               new PkgBuildTestSuite(conf, 'pkgbuild', 'pkg/pkgbuild.status'));
-        } else if (key == 'pub') {
-          // TODO(rnystrom): Move pub back into TEST_SUITE_DIRECTORIES once
-          // #104 is fixed.
-          testSuites.add(new StandardTestSuite(conf, 'pub',
-              new Path('sdk/lib/_internal/pub'),
-              ['sdk/lib/_internal/pub/pub.status'],
-              isTestFilePredicate: (file) => file.endsWith('_test.dart'),
-              recursive: true));
         }
       }