Remove all blimp network code.

blimp/net/blob_channel/mock_blob_channel_sender.cc

Index: blimp/net/blob_channel/mock_blob_channel_sender.cc
diff --git a/blimp/net/blob_channel/mock_blob_channel_sender.cc b/blimp/net/blob_channel/mock_blob_channel_sender.cc
deleted file mode 100644
index 7e165d1a773bea423ba65a7aaee85ceeacfa2410..0000000000000000000000000000000000000000
--- a/blimp/net/blob_channel/mock_blob_channel_sender.cc
+++ /dev/null
@@ -1,12 +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/net/blob_channel/mock_blob_channel_sender.h"
-
-namespace blimp {
-
-MockBlobChannelSender::MockBlobChannelSender() {}
-MockBlobChannelSender::~MockBlobChannelSender() {}
-
-}  // namespace blimp