kvm: x86: remove efer_reload entry in kvm_vcpu_stat

The efer_reload is never used since
commit 26bb0981 ("KVM: VMX: Use shared msr infrastructure"),
so remove it.
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

arch/x86/include/asm/kvm_host.h

@@ -895,7 +895,6 @@ struct kvm_vcpu_stat {
 	u64 request_irq_exits;
 	u64 irq_exits;
 	u64 host_state_reload;
-	u64 efer_reload;
 	u64 fpu_reload;
 	u64 insn_emulation;
 	u64 insn_emulation_fail;

arch/x86/kvm/x86.c

@@ -177,7 +177,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
 	{ "request_irq", VCPU_STAT(request_irq_exits) },
 	{ "irq_exits", VCPU_STAT(irq_exits) },
 	{ "host_state_reload", VCPU_STAT(host_state_reload) },
-	{ "efer_reload", VCPU_STAT(efer_reload) },
 	{ "fpu_reload", VCPU_STAT(fpu_reload) },
 	{ "insn_emulation", VCPU_STAT(insn_emulation) },
 	{ "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) },