x86/entry64: Remove unused audit related macros

These macros were added in the following commit:

  86a1c34a ("x86_64 syscall audit fast-path")

They were used in two-phase sycalls entry tracing, but this functionality
was then moved to the arch/x86/entry/common.c:syscall_trace_enter() function,
in the following commit:

  1f484aa6 ("x86/entry: Move C entry and exit code to arch/x86/entry/common.c")

syscall_trace_enter() now uses the defines from <linux/audit.h>,
so these defines entry_64.S are no longer used anywhere.
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20161023135646.4453-1-kuleshovmail@gmail.comSigned-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/entry/entry_64.S

@@ -38,12 +38,6 @@
 #include <asm/export.h>
 #include <linux/err.h>
 
-/* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
-#include <linux/elf-em.h>
-#define AUDIT_ARCH_X86_64			(EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
-#define __AUDIT_ARCH_64BIT			0x80000000
-#define __AUDIT_ARCH_LE				0x40000000
-
 .code64
 .section .entry.text, "ax"