[PATCH] x86_64: Removed duplicated declaration of force_iommu

Noticed by Andrew Morton.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-x86_64/proto.h

@@ -127,7 +127,6 @@ extern int fix_aperture;
 #define iommu_aperture 0
 #define iommu_aperture_allowed 0
 #endif
-extern int force_iommu;
 
 extern int reboot_force;
 extern int notsc_setup(char *);