[NaCl SDK] Remove syscalls wrappers for chmod and unlink.

native_client_sdk/src/libraries/nacl_io/kernel_object.cc

 // Copyright (c) 2012 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 "nacl_io/kernel_object.h"
 
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
@@ skipping 101 matching lines @@
   error = (*out_fs)->Open(rel_parts, oflags, out_node);
   if (error)
     return error;
 
   return 0;
 }
 
 Path KernelObject::GetAbsParts(const std::string& path) {
   AUTO_LOCK(cwd_lock_);
 
-  Path abs_parts(cwd_);
+  Path abs_parts;
   if (path[0] == '/') {
     abs_parts = path;
   } else {
     abs_parts = cwd_;
     abs_parts.Append(path);
   }
 
   return abs_parts;
 }
 
@@ skipping 121 matching lines @@
   AUTO_LOCK(handle_lock_);
 
   handle_map_[fd].handle.reset(NULL);
   free_fds_.push_back(fd);
 
   // Force lower numbered FD to be available first.
   std::push_heap(free_fds_.begin(), free_fds_.end(), std::greater<int>());
 }
 
 }  // namespace nacl_io