x86/headers: Remove duplicate #includes

These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.

Signed-off-by: Pravin Shedge <pravin.shedge4linux@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: ard.biesheuvel@linaro.org
Cc: boris.ostrovsky@oracle.com
Cc: geert@linux-m68k.org
Cc: jgross@suse.com
Cc: linux-efi@vger.kernel.org
Cc: luto@kernel.org
Cc: matt@codeblueprint.co.uk
Cc: thomas.lendacky@amd.com
Cc: tim.c.chen@linux.intel.com
Cc: xen-devel@lists.xenproject.org
Link: http://lkml.kernel.org/r/1513024951-9221-1-git-send-email-pravin.shedge4linux@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/kernel/itmt.c

@@ -24,7 +24,6 @@
 #include <linux/cpumask.h>
 #include <linux/cpuset.h>
 #include <linux/mutex.h>
-#include <linux/sched.h>
 #include <linux/sysctl.h>
 #include <linux/nodemask.h>
 

arch/x86/kernel/process.c

@@ -21,7 +21,6 @@
 #include <linux/dmi.h>
 #include <linux/utsname.h>
 #include <linux/stackprotector.h>
-#include <linux/tick.h>
 #include <linux/cpuidle.h>
 #include <trace/events/power.h>
 #include <linux/hw_breakpoint.h>

arch/x86/kernel/setup.c

@@ -114,7 +114,6 @@
 #include <asm/alternative.h>
 #include <asm/prom.h>
 #include <asm/microcode.h>
-#include <asm/mmu_context.h>
 #include <asm/kaslr.h>
 #include <asm/unwind.h>
 

arch/x86/kernel/smpboot.c

@@ -75,7 +75,6 @@
 #include <asm/uv/uv.h>
 #include <linux/mc146818rtc.h>
 #include <asm/i8259.h>
-#include <asm/realmode.h>
 #include <asm/misc.h>
 #include <asm/qspinlock.h>
 

arch/x86/platform/efi/efi_64.c

@@ -25,7 +25,6 @@
 #include <linux/spinlock.h>
 #include <linux/bootmem.h>
 #include <linux/ioport.h>
-#include <linux/init.h>
 #include <linux/mc146818rtc.h>
 #include <linux/efi.h>
 #include <linux/uaccess.h>

arch/x86/xen/spinlock.c

@@ -23,8 +23,6 @@ static DEFINE_PER_CPU(int, lock_kicker_irq) = -1;
 static DEFINE_PER_CPU(char *, irq_name);
 static bool xen_pvspin = true;
 
-#include <asm/qspinlock.h>
-
 static void xen_qlock_kick(int cpu)
 {
 	int irq = per_cpu(lock_kicker_irq, cpu);