Remove checkout of nss_pkcs12 to dart/third_party from DEPS.

standalone.deps/DEPS

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
   "dart_branch": "/branches/bleeding_edge",
   "chromium_url": "http://src.chromium.org/svn",
 
   "gyp_rev": "@1495",
   "nss_rev": "@209026",
-  "nss_pkcs12_rev" : "@26000",
 
   "co19_rev": "@515",
   "co19_repo": "http://co19.googlecode.com/svn/trunk/co19/",
 }
 
 deps = {
   "dart":
     Var("dart_branch") + "/dart",
 
   # co19 tests.
   "dart/tests/co19/src":
     Var("co19_repo") + "tests/co19/src" + Var("co19_rev"),
 
   # Stuff needed for GYP to run.
   "dart/third_party/gyp":
     "http://gyp.googlecode.com/svn/trunk" + Var("gyp_rev"),
 
   # Stuff needed for secure sockets.
   "dart/third_party/nss":
       Var("chromium_url") + "/trunk/deps/third_party/nss" + Var("nss_rev"),
 
   "dart/third_party/sqlite":
       Var("chromium_url") + "/trunk/src/third_party/sqlite" + Var("nss_rev"),
 
   "dart/third_party/zlib":
       Var("chromium_url") + "/trunk/src/third_party/zlib" + Var("nss_rev"),
 
   "dart/third_party/net_nss":
       Var("chromium_url") + "/trunk/src/net/third_party/nss" + Var("nss_rev"),
-
-  "dart/third_party/nss_pkcs12":
-      "/third_party/nss_pkcs12" + Var("nss_pkcs12_rev"),
 }
 
 deps_os = {
   "win": {
     "third_party/cygwin":
       Var("chromium_url") + "/trunk/deps/third_party/cygwin@66844",
   },
 }
 
 hooks = [
   {
     "pattern": ".",
     "action": ["python", "dart/tools/generate_projects.py", "runtime"],
   },
 ]