stop building/testing old x86 validator.

src/trusted/validator/validator_init.c

 /*
  * Copyright (c) 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.
  */
 
 #include "native_client/src/shared/platform/nacl_log.h"
 #include "native_client/src/trusted/validator/ncvalidate.h"
 
-#if !defined(NACL_VALIDATOR_RAGEL) && NACL_ARCH(NACL_TARGET_ARCH) == NACL_x86
-static INLINE void EmitObsoleteValidatorWarning(void) {
-  NaClLog(LOG_WARNING, "USING OBSOLETE NON-DFA-BASED VALIDATOR!\n");
-}
-#endif
 
 const struct NaClValidatorInterface *NaClCreateValidator(void) {
 #if NACL_ARCH(NACL_BUILD_ARCH) == NACL_arm
   return NaClValidatorCreateArm();
 #elif NACL_ARCH(NACL_BUILD_ARCH) == NACL_mips
   return NaClValidatorCreateMips();
 #elif NACL_ARCH(NACL_TARGET_ARCH) == NACL_x86
 # if NACL_TARGET_SUBARCH == 64
-#  if defined(NACL_VALIDATOR_RAGEL)
   return NaClDfaValidatorCreate_x86_64();
-#  else
-  EmitObsoleteValidatorWarning();
-  return NaClValidatorCreate_x86_64();
-#  endif  /* defined(NACL_VALIDATOR_RAGEL) */
 # elif NACL_TARGET_SUBARCH == 32
-#  if defined(NACL_VALIDATOR_RAGEL)
   return NaClDfaValidatorCreate_x86_32();
-#  else
-  EmitObsoleteValidatorWarning();
-  return NaClValidatorCreate_x86_32();
-#  endif  /* defined(NACL_VALIDATOR_RAGEL) */
 # else
 #  error "Invalid sub-architecture!"
 # endif
 #else  /* NACL_x86 */
 # error "There is no validator for this architecture!"
 #endif
 }