Remove all blimp engine code

blimp/engine/app/switches.h

Index: blimp/engine/app/switches.h
diff --git a/blimp/engine/app/switches.h b/blimp/engine/app/switches.h
deleted file mode 100644
index e4dce0f2290fbe3ae33651a8caa8496cdfe69d52..0000000000000000000000000000000000000000
--- a/blimp/engine/app/switches.h
+++ /dev/null
@@ -1,23 +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.
-
-#ifndef BLIMP_ENGINE_APP_SWITCHES_H_
-#define BLIMP_ENGINE_APP_SWITCHES_H_
-
-namespace blimp {
-namespace engine {
-
-// The port to listen to for incoming TCP connections.
-extern const char kEnginePort[];
-
-// Flag enabling access by clients from non-localhost IP addresses.
-extern const char kAllowNonLocalhost[];
-
-// Transport type: tcp, grpc. If empty, tcp is assumed by default.
-extern const char kEngineTransport[];
-
-}  // namespace engine
-}  // namespace blimp
-
-#endif  // BLIMP_ENGINE_APP_SWITCHES_H_