Simplify cli_main

ports/ipython-ppapi/kernel.cc

 /* Copyright (c) 2014 Google Inc. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
 #include <python2.7/Python.h>
 #include <libtar.h>
 #include <locale.h>
 #include <stdio.h>
 #include <fcntl.h>
 #include <sys/mount.h>
 #include <errno.h>
 
 #include "ppapi/cpp/var.h"
 #include "ppapi/cpp/var_array.h"
 #include "ppapi/cpp/var_dictionary.h"
 #include "ppapi_simple/ps_interface.h"
 
 #include "nacl_io/nacl_io.h"
 #include "ppapi_simple/ps_main.h"
 #include "ppapi_simple/ps_instance.h"
 
 #ifdef __pnacl__
 #define DATA_FILE "pydata_pnacl.tar"
 #else
 #error "Unknown arch"
 #endif
 
 /* TODO(bradnelson): Switch ipython to use cli_main and drop this. */
-int nacl_spawn_pid = -1;
-int nacl_spawn_ppid = -1;
 
 static int setup_unix_environment() {
     int ret = umount("/");
     if (ret) {
       printf("unmounting root fs failed\n");
       return 1;
     }
 
     ret = mount("", "/", "memfs", 0, NULL);
     if (ret) {
@@ skipping 137 matching lines @@
 
     quit = PyRun_SimpleFileEx(main, main_filename, 1);
 
     Py_Finalize();
   }
 
   return 0;
 }
 
 PPAPI_SIMPLE_REGISTER_MAIN(ipython_kernel_main)