Remove all blimp browsertests.

blimp/engine/browser_tests/test_client_session.cc

Index: blimp/engine/browser_tests/test_client_session.cc
diff --git a/blimp/engine/browser_tests/test_client_session.cc b/blimp/engine/browser_tests/test_client_session.cc
deleted file mode 100644
index a1cafcec9334bd8d58f0f739687ec4f3bd15438c..0000000000000000000000000000000000000000
--- a/blimp/engine/browser_tests/test_client_session.cc
+++ /dev/null
@@ -1,20 +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/engine/browser_tests/test_client_session.h"
-
-namespace blimp {
-namespace client {
-namespace {
-// Assigner is not actually used in this test.
-const char kAssignerUrl[] = "http://www.assigner.test/";
-}  // namespace
-
-TestClientSession::TestClientSession()
-    : client::BlimpClientSession(GURL(kAssignerUrl)) {}
-
-TestClientSession::~TestClientSession() {}
-
-}  // namespace client
-}  // namespace blimp