Delete old x86 validator.

src/trusted/validator/x86/halt_trim.h

-/*
- * Copyright (c) 2011 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.
- */
-
-/* Defines code to detect trailing halts in a code segment, and how many
- * can be trimmed from the code segment without effecting the validator.
- */
-
-#ifndef NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_HALT_TRIM_H__
-#define NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_HALT_TRIM_H__
-
-#include "native_client/src/trusted/validator/types_memory_model.h"
-
-EXTERN_C_BEGIN
-
-/* Takes a code memory segment, and returns the (safe) size to
- * use for validation. It does this by checking for trailing halt
- * instructions, and removes excess halts from the code segment memory.
- * This function assumes the code segment will be mapped to an aligned base
- * address.
- *
- * Parameters are:
- *   mbase - The beging of the memory segment to decode.
- *   sz - The number of bytes in the memory segment.
- *   alignment - The blocksize alignment used for the code segment.
- * Returns:
- *   The number of bytes in the trimmed memory segment.
- */
-NaClMemorySize NCHaltTrimSize(uint8_t* mbase, NaClMemorySize sz,
-                              uint8_t alignment);
-
-EXTERN_C_END
-
-#endif  /* NATIVE_CLIENT_SRC_TRUSTED_VALIDATOR_X86_HALT_TRIM_H__ */