Remove redundant NaCl SDK buildbot run script

scripts/slave/recipes/client.nacl.sdk.recipe_autogen.expected/windows_sdk_multirel.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/kill_processes.py"
     ],
     "name": "taskkill"
   },
   {
@@ skipping 146 matching lines @@
       "--compiler=goma",
       "chrome"
     ],
     "name": "compile"
   },
   {
     "allow_subannotations": true,
     "cmd": [
       "python",
       "-u",
-      "[BUILD]/scripts/slave/chromium/nacl_sdk_buildbot_run.py",
+      "[SLAVE_BUILD]/chrome-official/native_client_sdk/src/build_tools/buildbot_run.py",
       "--build-properties={\"buildername\":\"windows-sdk-multirel\",\"buildnumber\":\"42\",\"got_revision\":\"f27fede2220bcd326aee3e86ddfd4ebd0fe58cb9\",\"got_revision_cp\":\"refs/heads/master@{#170242}\",\"got_swarming_client_revision\":\"a0ee5d99f1d4b38ddaa4c759c837980b63b99566\",\"got_swarming_client_revision_cp\":\"refs/heads/master@{#276089}\",\"got_v8_revision\":\"801ada225ddc271c132c3a35f03975671d43e399\",\"got_v8_revision_cp\":\"refs/heads/master@{#43426}\",\"got_webkit_revision\":\"5e2293dffc3cd07d37fbedea3b500f0eb650614d\",\"got_webkit_revision_cp\":\"refs/heads/master@{#124383}\",\"mastername\":\"client.nacl.sdk\",\"recipe\":\"client.nacl.sdk.recipe_autogen\",\"revision\":\"123456789abcdef\",\"slavename\":\"TestSlave\"}",
-      "--factory-properties={\"annotated_script\":\"nacl_sdk_buildbot_run.py\",\"blink_config\":\"chromium\",\"gclient_env\":{\"CHROMIUM_GYP_SYNTAX_CHECK\":\"1\",\"DEPOT_TOOLS_UPDATE\":\"0\",\"GYP_DEFINES\":\"fastbuild=1 component=static_library\",\"LANDMINES_VERBOSE\":\"1\"},\"no_gclient_branch\":true,\"nuke_and_pave\":true}"
+      "--factory-properties={\"annotated_script\":\"buildbot_run.py\",\"blink_config\":\"chromium\",\"gclient_env\":{\"CHROMIUM_GYP_SYNTAX_CHECK\":\"1\",\"DEPOT_TOOLS_UPDATE\":\"0\",\"GYP_DEFINES\":\"fastbuild=1 component=static_library\",\"LANDMINES_VERBOSE\":\"1\"},\"no_gclient_branch\":true,\"nuke_and_pave\":true}"
     ],
     "name": "annotated_steps"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]