Remove all blimp client code.

blimp/client/core/settings/settings_prefs.cc

Index: blimp/client/core/settings/settings_prefs.cc
diff --git a/blimp/client/core/settings/settings_prefs.cc b/blimp/client/core/settings/settings_prefs.cc
deleted file mode 100644
index 738a017ec2c4b018ba4784934e37f75d81528c40..0000000000000000000000000000000000000000
--- a/blimp/client/core/settings/settings_prefs.cc
+++ /dev/null
@@ -1,17 +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/client/core/settings/settings_prefs.h"
-
-namespace blimp {
-namespace client {
-namespace prefs {
-
-const char kBlimpEnabled[] = "blimp.blimp_enabled";
-
-const char kRecordWholeDocument[] = "blimp.record_whole_document";
-
-}  // namespace prefs
-}  // namespace client
-}  // namespace blimp