Remove code for Mac and Linux virtual print drivers.

cloud_print/virtual_driver/posix/printer_driver_util_posix.h

Index: cloud_print/virtual_driver/posix/printer_driver_util_posix.h
diff --git a/cloud_print/virtual_driver/posix/printer_driver_util_posix.h b/cloud_print/virtual_driver/posix/printer_driver_util_posix.h
deleted file mode 100644
index 8631f070283789af86ce3b5075cf230d5e20bf10..0000000000000000000000000000000000000000
--- a/cloud_print/virtual_driver/posix/printer_driver_util_posix.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// Copyright (c) 2011 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.
-#ifndef CLOUD_PRINT_VIRTUAL_DRIVER_POSIX_PRINTER_DRIVER_UTIL_POSIX_H_
-#define CLOUD_PRINT_VIRTUAL_DRIVER_POSIX_PRINTER_DRIVER_UTIL_POSIX_H_
-#pragma once
-
-#include <string>
-
-#include "base/file_path.h"
-
-namespace printer_driver_util {
-
-void LaunchPrintDialog(const std::string& output_path,
-                       const std::string& job_title,
-                       const std::string& current_user,
-                       const std::string& print_ticket);
-void WriteToTemp(FILE* input_pdf, FilePath output_path);
-void SetUser(const char* user);
-void GetOptions(const char* options, std::string* print_ticket);
-
-}  // namespace printer_driver_util
-
-#endif  // CLOUD_PRINT_VIRTUAL_DRIVER_POSIX_PRINTER_DRIVER_UTIL_POSIX_H_