Remove openglui embedder code

runtime/embedders/openglui/common/timer.h

Index: runtime/embedders/openglui/common/timer.h
diff --git a/runtime/embedders/openglui/common/timer.h b/runtime/embedders/openglui/common/timer.h
deleted file mode 100644
index d2f3d67c6b2019b137a4d509f2a85009f2532d7c..0000000000000000000000000000000000000000
--- a/runtime/embedders/openglui/common/timer.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#ifndef EMBEDDERS_OPENGLUI_COMMON_TIMER_H_
-#define EMBEDDERS_OPENGLUI_COMMON_TIMER_H_
-
-#include <time.h>
-
-class Timer {
- public:
-  Timer();
-  void Reset();
-  void Update();
-  double Now();
-  float Elapsed();
-
- private:
-  float elapsed_;
-  double last_time_;
-};
-
-#endif  // EMBEDDERS_OPENGLUI_COMMON_TIMER_H_
-