MIPS: KVM: Drop some unused definitions from kvm_host.h

Some definitions in the MIPS asm/kvm_host.h are completely unused, so
lets drop them.

MS_TO_NS is no longer used since commit e30492b ("MIPS: KVM:
Rewrite count/compare timer emulation"). The others don't appear ever to
have been used.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11884/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/kvm_host.h

@@ -92,11 +92,6 @@
 #define KVM_INVALID_INST		0xdeadbeef
 #define KVM_INVALID_ADDR		0xdeadbeef
 
-#define KVM_MALTA_GUEST_RTC_ADDR	0xb8000070UL
-
-#define GUEST_TICKS_PER_JIFFY		(40000000/HZ)
-#define MS_TO_NS(x)			(x * 1E6L)
-
 #define CAUSEB_DC			27
 #define CAUSEF_DC			(_ULCAST_(1) << 27)