Make the fuchsia mojo/public repo the source of truth.

mojo/public/c/tests/system/reference_perftest.cc

Index: mojo/public/c/tests/system/reference_perftest.cc
diff --git a/mojo/public/c/tests/system/reference_perftest.cc b/mojo/public/c/tests/system/reference_perftest.cc
deleted file mode 100644
index a86c18df8b924cba76ead486912b7cd3fd761acf..0000000000000000000000000000000000000000
--- a/mojo/public/c/tests/system/reference_perftest.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// This provides a reference for comparison of performance versus overhead in
-// perftests.
-
-#include "gtest/gtest.h"
-#include "mojo/public/c/tests/system/perftest_utils.h"
-
-namespace {
-
-// A no-op test so we can compare performance.
-TEST(ReferencePerftest, NoOp) {
-  mojo::test::IterateAndReportPerf("Reference_NoOp", nullptr, []() {});
-}
-
-}  // namespace