cc: Remove all blimp code from cc.

cc/proto/rect.proto

Index: cc/proto/rect.proto
diff --git a/cc/proto/rect.proto b/cc/proto/rect.proto
deleted file mode 100644
index a0194b185d8954112eef235f63a9c52ea1050b5b..0000000000000000000000000000000000000000
--- a/cc/proto/rect.proto
+++ /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.
-
-syntax = "proto2";
-
-import "point.proto";
-import "size.proto";
-
-option optimize_for = LITE_RUNTIME;
-
-package cc.proto;
-
-message Rect {
-  optional cc.proto.Point origin = 1;
-  optional cc.proto.Size size = 2;
-}