KVM: x86/xen: Remove the redundantly included header file lapic.h

The header lapic.h is included more than once, remove one of them.
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220406063715.55625-2-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/xen.c

@@ -8,7 +8,6 @@
 
 #include "x86.h"
 #include "xen.h"
-#include "lapic.h"
 #include "hyperv.h"
 #include "lapic.h"