Revert of Add ClientConfig proto, and JSON generation/parsing.

components/data_reduction_proxy/proto/BUILD.gn

Index: components/data_reduction_proxy/proto/BUILD.gn
diff --git a/components/data_reduction_proxy/proto/BUILD.gn b/components/data_reduction_proxy/proto/BUILD.gn
deleted file mode 100644
index 889c1067838d1e9f9de8724ac99dc15377ab540f..0000000000000000000000000000000000000000
--- a/components/data_reduction_proxy/proto/BUILD.gn
+++ /dev/null
@@ -1,11 +0,0 @@
-# Copyright 2015 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.
-
-import("//third_party/protobuf/proto_library.gni")
-
-proto_library("data_reduction_proxy_proto") {
-  sources = [
-    "client_config.proto",
-  ]
-}