[swarming] Run unittests together with default tests.

test/developer_default.gyp

Index: test/developer_default.gyp
diff --git a/test/developer_default.gyp b/test/developer_default.gyp
deleted file mode 100644
index 4da73aa15150c72f3d9ff55550cbaabc96ddfb5b..0000000000000000000000000000000000000000
--- a/test/developer_default.gyp
+++ /dev/null
@@ -1,27 +0,0 @@
-# Copyright 2015 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-{
-  'conditions': [
-    ['test_isolation_mode != "noop"', {
-      'targets': [
-        {
-          'target_name': 'developer_default_run',
-          'type': 'none',
-          'dependencies': [
-            'default.gyp:default_run',
-            'unittests/unittests.gyp:unittests_run',
-          ],
-          'includes': [
-            '../build/features.gypi',
-            '../build/isolate.gypi',
-          ],
-          'sources': [
-            'developer_default.isolate',
-          ],
-        },
-      ],
-    }],
-  ],
-}