KVM: Don't wrap schedule() with vcpu_put()/vcpu_load()

Preemption notifiers will do that for us automatically.

Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 7495ce3..22b520b 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1689,9 +1689,7 @@
 		if (signal_pending(current))
 			break;
 
-		vcpu_put(vcpu);
 		schedule();
-		vcpu_load(vcpu);
 	}
 
 	finish_wait(&vcpu->wq, &wait);