x86: wipe out traditional opt from x86_64 Makefile

Among other things, using -traditional as a gcc option stops us from
using macro token pasting, which is a feature we heavily rely on.

There was still a use of -traditional in arch/x86/kernel/Makefile_64,
which this patch removes.

I don't see any problems building kernels in my x86_64 box without
-traditional.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/Makefile_64

@@ -4,7 +4,6 @@
 
 extra-y 	:= head_64.o head64.o init_task.o vmlinux.lds
 CPPFLAGS_vmlinux.lds += -Ux86_64
-EXTRA_AFLAGS	:= -traditional
 
 obj-y	:= process_64.o signal_64.o entry_64.o traps_64.o irq_64.o \
 		time_64.o ioport_64.o ldt.o setup_64.o i8259_64.o sys_x86_64.o \