Removed unused mojo_nacl code and GYP targets.

mojo/nacl/monacl_sel_main.cc

-// Copyright 2014 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 "mojo/nacl/monacl_sel_main.h"
-
-#include <stdio.h>
-
-#include "mojo/nacl/mojo_syscall.h"
-#include "native_client/src/public/chrome_main.h"
-#include "native_client/src/public/nacl_app.h"
-#include "native_client/src/trusted/desc/nacl_desc_io.h"
-#include "native_client/src/trusted/service_runtime/include/sys/fcntl.h"
-
-namespace mojo {
-
-void LaunchNaCl(const char* nexe_file, const char* irt_file,
-                int app_argc, char* app_argv[]) {
-  NaClChromeMainInit();
-
-  // Open the IRT.
-  struct NaClDesc* irt_desc = (struct NaClDesc*) NaClDescIoDescOpen(
-      irt_file, NACL_ABI_O_RDONLY, 0);
-  if (NULL == irt_desc) {
-    perror(irt_file);
-    exit(1);
-  }
-
-  // Open the main executable.
-  struct NaClDesc* nexe_desc = (struct NaClDesc*) NaClDescIoDescOpen(
-      nexe_file, NACL_ABI_O_RDONLY, 0);
-  if (NULL == nexe_desc) {
-    perror(nexe_file);
-    exit(1);
-  }
-
-  struct NaClChromeMainArgs* args = NaClChromeMainArgsCreate();
-  args->nexe_desc = nexe_desc;
-  args->irt_desc = irt_desc;
-
-  args->argc = app_argc;
-  args->argv = app_argv;
-
-  struct NaClApp* nap = NaClAppCreate();
-  InjectMojo(nap);
-
-  int exit_status = 1;
-  NaClChromeMainStart(nap, args, &exit_status);
-  NaClExit(exit_status);
-}
-
-} // namespace mojo