KVM: MMU: remove unused parameter

vcpu in page_fault_can_be_fast() is not used so remove it

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

arch/x86/kvm/mmu.c

@@ -2781,7 +2781,7 @@ exit:
 	return ret;
 }
 
-static bool page_fault_can_be_fast(struct kvm_vcpu *vcpu, u32 error_code)
+static bool page_fault_can_be_fast(u32 error_code)
 {
 	/*
 	 * Do not fix the mmio spte with invalid generation number which
@@ -2834,7 +2834,7 @@ static bool fast_page_fault(struct kvm_vcpu *vcpu, gva_t gva, int level,
 	bool ret = false;
 	u64 spte = 0ull;
 
-	if (!page_fault_can_be_fast(vcpu, error_code))
+	if (!page_fault_can_be_fast(error_code))
 		return false;
 
 	walk_shadow_page_lockless_begin(vcpu);