ppc: Remove unused cpp symbols in kvm headers

These don't seem to be used anywhere.
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Will deacon <will.deacon@arm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

arch/powerpc/include/asm/kvm_book3s.h

@@ -106,10 +106,6 @@ struct kvmppc_vcpu_book3s {
 	spinlock_t mmu_lock;
 };
 
-#define CONTEXT_HOST		0
-#define CONTEXT_GUEST		1
-#define CONTEXT_GUEST_END	2
-
 #define VSID_REAL	0x07ffffffffc00000ULL
 #define VSID_BAT	0x07ffffffffb00000ULL
 #define VSID_64K	0x0800000000000000ULL