Remove all blimp engine code

blimp/engine/app/switches.cc

Index: blimp/engine/app/switches.cc
diff --git a/blimp/engine/app/switches.cc b/blimp/engine/app/switches.cc
deleted file mode 100644
index 9e62baea71a8a2c733b0ebd9d3eeddfe0eafe580..0000000000000000000000000000000000000000
--- a/blimp/engine/app/switches.cc
+++ /dev/null
@@ -1,15 +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.
-
-#include "blimp/engine/app/switches.h"
-
-namespace blimp {
-namespace engine {
-
-const char kEnginePort[] = "engine-port";
-const char kAllowNonLocalhost[] = "allow-non-localhost";
-const char kEngineTransport[] = "engine-transport";
-
-}  // namespace engine
-}  // namespace blimp