stop building/testing old x86 validator.

src/tools/validator_tools/build.scons

Index: src/tools/validator_tools/build.scons
diff --git a/src/tools/validator_tools/build.scons b/src/tools/validator_tools/build.scons
deleted file mode 100644
index 64275cd9bed7f35e34faaf2517b6ef74d26286a1..0000000000000000000000000000000000000000
--- a/src/tools/validator_tools/build.scons
+++ /dev/null
@@ -1,25 +0,0 @@
-# -*- python -*-
-# Copyright 2012 The Native Client Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-Import('env')
-
-# TODO(mseaborn): Extend the ARM validator to support this.
-if not env.Bit('target_x86'):
-  Return()
-
-# The R-DFA validators are currently unable to work in stubout mode.
-# TODO(pasko): either eliminate the stubout tools or add stubout mode to the
-# validator.
-if env.Bit('validator_ragel'):
-  Return()
-
-# Create environment for command-line tools and testing.
-env.Append(CCFLAGS=['-DNACL_TRUSTED_BUT_NOT_TCB'])
-
-env.ComponentProgram(
-    'ncval_stubout',
-    'ncstubout.c',
-    EXTRA_LIBS=['validators', env.NaClTargetArchSuffix('ncvalidate_verbose'),
-                'nrd_xfer'])