Remove //third_party/okhttp.

This is no longer needed after the divorce^Wamicable separation from
sky^Wflutter.

R=kulakowski@chromium.org, kulakowski@google.com

Review URL: https://codereview.chromium.org/1538573003 .
diff --git a/third_party/okhttp/BUILD.gn b/third_party/okhttp/BUILD.gn
deleted file mode 100644
index d84c51c..0000000
--- a/third_party/okhttp/BUILD.gn
+++ /dev/null
@@ -1,17 +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("//build/config/android/rules.gni")
-
-android_java_prebuilt("okio") {
-  jar_path = "okio-1.2.0.jar"
-}
-
-android_java_prebuilt("okhttp") {
-  jar_path = "okhttp-2.2.0.jar"
-
-  deps = [
-    ":okio",
-  ]
-}
diff --git a/third_party/okhttp/LICENSE b/third_party/okhttp/LICENSE
deleted file mode 100644
index d3270a9..0000000
--- a/third_party/okhttp/LICENSE
+++ /dev/null
@@ -1,13 +0,0 @@
-Copyright 2014 Square, Inc.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-   http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
diff --git a/third_party/okhttp/okhttp-2.2.0.jar b/third_party/okhttp/okhttp-2.2.0.jar
deleted file mode 100644
index aabcbaa..0000000
--- a/third_party/okhttp/okhttp-2.2.0.jar
+++ /dev/null
Binary files differ
diff --git a/third_party/okhttp/okio-1.2.0.jar b/third_party/okhttp/okio-1.2.0.jar
deleted file mode 100644
index a1d1105..0000000
--- a/third_party/okhttp/okio-1.2.0.jar
+++ /dev/null
Binary files differ