Remove all blimp client code.

blimp/client/app/linux/blimp_display_manager_delegate_main.h

Index: blimp/client/app/linux/blimp_display_manager_delegate_main.h
diff --git a/blimp/client/app/linux/blimp_display_manager_delegate_main.h b/blimp/client/app/linux/blimp_display_manager_delegate_main.h
deleted file mode 100644
index 6d23be0dae6bd2d82278f51528a6e495e83a0129..0000000000000000000000000000000000000000
--- a/blimp/client/app/linux/blimp_display_manager_delegate_main.h
+++ /dev/null
@@ -1,21 +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_CLIENT_APP_LINUX_BLIMP_DISPLAY_MANAGER_DELEGATE_MAIN_H_
-#define BLIMP_CLIENT_APP_LINUX_BLIMP_DISPLAY_MANAGER_DELEGATE_MAIN_H_
-
-#include "blimp/client/app/linux/blimp_display_manager.h"
-
-namespace blimp {
-namespace client {
-
-class BlimpDisplayManagerDelegateMain : public BlimpDisplayManagerDelegate {
- public:
-  void OnClosed() override;
-};
-
-}  // namespace client
-}  // namespace blimp
-
-#endif  // BLIMP_CLIENT_APP_LINUX_BLIMP_DISPLAY_MANAGER_DELEGATE_MAIN_H_